{"title":"Grade 4 Math: Number \u0026 Operations in Base Ten","description":"\u003cp\u003e4th grade math worksheets and activities for number \u0026amp; operations in base ten (Common Core 4.NBT): printable mystery worksheets, CSI cases and digital escape rooms.\u003c\/p\u003e","products":[{"product_id":"long-division-csi-mystery-activity","title":"Long Division CSI Mystery Worksheets | Grades 4–6 | The Divided Monster","description":"\u003cp\u003eLong division practice worksheets, division with remainders activities, and multi-digit division word problems for 4th grade and 5th grade are all included in this printable CSI Mystery Detective case. Students divide 3-digit and 4-digit numbers by a 1-digit divisor, with and without remainders, in a pack built for math centers, early finishers, sub days, homework and end-of-unit review - completely no prep, just print and go.\u003c\/p\u003e\n\u003cp\u003eLong division is the skill students most want to give up on, and the one that rewards repetition most. This case hides the repetition inside a mystery, so a class that groans at a page of quotients will work through the whole set to find out who did it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Included in This Case?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDivision basic facts through 12, so recall is warm before the algorithm starts\u003c\/li\u003e\n  \u003cli\u003eDividing 3-digit numbers by a 1-digit divisor with no remainders\u003c\/li\u003e\n  \u003cli\u003eDividing 4-digit numbers by a 1-digit divisor with no remainders\u003c\/li\u003e\n  \u003cli\u003eDividing 4-digit numbers by a 1-digit divisor with remainders, and what the remainder means\u003c\/li\u003e\n  \u003cli\u003eDivision word problems, where students decide what to divide before they divide it\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for every page\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOne case to crack, solved clue by clue as the division gets harder.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA CSI Mystery Detective is a print-and-solve math activity - an escape room without the locks. Students work through math problems to collect evidence, eliminate suspects and reveal who did it, so real skill practice comes wrapped in a detective hook that keeps the whole class engaged. The pages check themselves: a wrong answer stops the mystery in its tracks, so students go back and find their own mistake before it ever reaches your marking pile.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAbout This Case\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSomething very strange has happened at Monster School. A student named Squirmy has been split into two conflicting parts, and nothing he does works properly any more. Principal Spookington needs a detective who can divide carefully enough to work out who is behind it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMath centers and rotations\u003c\/li\u003e\n  \u003cli\u003eIndependent long division practice and morning work\u003c\/li\u003e\n  \u003cli\u003eEarly finisher and enrichment folders\u003c\/li\u003e\n  \u003cli\u003eEmergency sub days - hand it over and it runs itself\u003c\/li\u003e\n  \u003cli\u003eRTI, intervention and small-group work\u003c\/li\u003e\n  \u003cli\u003eHomework and homeschool lessons\u003c\/li\u003e\n  \u003cli\u003eEnd-of-unit review, test prep and the last weeks of the year\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned for 4th and 5th grade. The basic facts and 3-digit pages give 3rd graders moving into long division a way in, and the 4-digit and remainder pages give 6th graders who still need the algorithm real practice without a babyish worksheet.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detectives\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking, so students catch their own errors\u003c\/li\u003e\n  \u003cli\u003ePrints clean in black and white\u003c\/li\u003e\n  \u003cli\u003eHolds the attention of students who avoid long division\u003c\/li\u003e\n  \u003cli\u003eReal standards-aligned division practice, not busy work\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eSave with the bundle: CSI Multiplication and Division Fun, 3rd 4th 5th Grade Worksheets\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Product\/CSI-Mystery-Multiplication-and-Division-Fun-3rd-4th-5th-Grade-Worksheets-11990804\"\u003ehttps:\/\/www.teacherspayteachers.com\/Product\/CSI-Mystery-Multiplication-and-Division-Fun-3rd-4th-5th-Grade-Worksheets-11990804\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mystery Detectives, division and multiplication practice packs, and detective-themed stories for elementary classrooms.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52002732147058,"sku":"9571010","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/long-division-worksheets-mystery-detective-the-divided-monster-school-9571010.jpg?v=1792459696"},{"product_id":"2x2-digit-area-model-mystery-detective","title":"2-Digit by 2-Digit Area Model Multiplication | Mystery Detective Worksheets | Grades 3–6 | Printable Detective Pack","description":"\u003cp\u003eAre you looking for multi-digit multiplication math activities and worksheets using the Area Model or Box Method? These engaging 2x2 digit multiplication Mini Mystery Detective worksheets are the perfect way to practice.\u003c\/p\u003e\n\n\u003cp\u003eThe Mystery Detectives are designed to be done in one class period. This pack contains five area model Mysteries. At the top of each page is a story to set the scene. Students then answer the questions to narrow down the suspects and options until they have solved these daily math questions.\u003c\/p\u003e\n\n\u003cp\u003eThese area model multiplication worksheets provide an opportunity to practice math and problem-solving skills in a more practical context. The high-interest topics in these mysteries are highly motivating for this age group and will capture their imagination.\u003c\/p\u003e\n\n\u003cp\u003eThese Mystery Detectives are designed for 4th-grade and 5th-grade students. They could also be used with struggling 6th-grade students who need a little extra work and reinforcement in multiplication problems. I also leave some of the mysteries for my sub-teacher.\u003c\/p\u003e\n\n\u003cp\u003eMystery Detectives are an independent escape room (or crack the code) activity where students identify suspects using puzzles, word problems, and games instead of locks.\u003c\/p\u003e\n\n\u003cp\u003eEnjoy these area model multiplication math worksheets and activities. Remember to follow me by clicking the following link to find my latest resources and receive discounts.\u003c\/p\u003e\n\n\u003cp\u003eThank you\u003c\/p\u003e\n\n\u003cp\u003eKiwiland\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre you after Box Method Long Division worksheets:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e3 Digit Box Method Division Mystery Detectives\u003c\/li\u003e\n  \u003cli\u003e4 Digit Box Method Division Mystery Detectives\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more Mini Mystery Detective packs, no-prep math activities, and detective-themed stories for the classroom.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52004082549106,"sku":"12800366","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/area-model-multiplication-2-by-2-digit-worksheets-grade-4-5-12800366.jpg?v=1792460555"},{"product_id":"2x1-digit-area-model-mystery-detective","title":"2-Digit by 1-Digit Area Model Multiplication | Mystery Detective Worksheets | Grades 3–6 | Printable Detective Pack","description":"\u003cp\u003eAre you looking for multi-digit multiplication math activities and worksheets using the Area Model or Box Method? These engaging 2x1 digit multiplication Mini Mystery Detective worksheets are the perfect way to practice.\u003c\/p\u003e\n\n\u003cp\u003eThe Mystery Detectives are designed to be done in one class period. This pack contains five area model Mysteries. At the top of each page is a story to set the scene. Students then answer the questions to narrow down the suspects and options until they have solved these daily math questions.\u003c\/p\u003e\n\n\u003cp\u003eThese area model multiplication worksheets provide an opportunity to practice math and problem-solving skills in a more practical context. The high-interest topics in these mysteries are highly motivating for this age group and will capture their imagination.\u003c\/p\u003e\n\n\u003cp\u003eThese Mystery Detectives are designed for 3rd-grade and 4th-grade students. They could also be used with struggling 5th-grade students who need extra work and reinforcement in multiplication problems. I also leave some of the mysteries for my sub-teacher.\u003c\/p\u003e\n\n\u003cp\u003eMystery Detectives are an independent escape room (or crack the code) activity where students identify suspects using puzzles, word problems, and games instead of locks.\u003c\/p\u003e\n\n\u003cp\u003eEnjoy these area model multiplication math worksheets and activities. Remember to follow me by clicking the following link to find my latest resources and receive discounts.\u003c\/p\u003e\n\n\u003cp\u003eThank you\u003c\/p\u003e\n\n\u003cp\u003eKiwiland\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre you after Box Method Long Division worksheets:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e3 Digit Box Method Division Mystery Detectives\u003c\/li\u003e\n  \u003cli\u003e4 Digit Box Method Division Mystery Detectives\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more Mini Mystery Detective packs, no-prep math activities, and detective-themed stories for the classroom.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52004115251570,"sku":"12776181","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/area-model-multiplication-2-by-1-digit-worksheets-grade-4-12776181.jpg?v=1792460402"},{"product_id":"3x1-digit-area-model-mystery-detective","title":"3-Digit by 1-Digit Area Model Multiplication | Mystery Detective Worksheets | Grades 3–6 | Printable Detective Pack","description":"\u003cp\u003eAre you looking for multi-digit multiplication math activities and worksheets using the Area Model or Box Method? These engaging 3x1 digit multiplication Mini Mystery Detective worksheets are the perfect way to practice.\u003c\/p\u003e\n\n\u003cp\u003eThe Mystery Detectives are designed to be done in one class period. This pack contains five area model Mysteries. At the top of each page is a story to set the scene. Students then answer the questions to narrow down the suspects and options until they have solved these daily math questions.\u003c\/p\u003e\n\n\u003cp\u003eThese area model multiplication worksheets provide an opportunity to practice math and problem-solving skills in a more practical context. The high-interest topics in these mysteries are highly motivating for this age group and will capture their imagination.\u003c\/p\u003e\n\n\u003cp\u003eThese Mystery Detectives are designed for 3rd-grade, 4th-grade, and 5th-grade students. They could also be used with struggling 6th-grade students who need a little extra work and reinforcement in multiplication problems. I also leave some of the mysteries for my sub-teacher.\u003c\/p\u003e\n\n\u003cp\u003eMystery Detectives are an independent escape room (or crack the code) activity where students identify suspects using puzzles, word problems, and games instead of locks.\u003c\/p\u003e\n\n\u003cp\u003eEnjoy these area model multiplication math worksheets and activities. Remember to follow me by clicking the following link to find my latest resources and receive discounts.\u003c\/p\u003e\n\n\u003cp\u003eThank you\u003c\/p\u003e\n\n\u003cp\u003eKiwiland\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre you after Box Method Long Division worksheets:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e3 Digit Box Method Division Mystery Detectives\u003c\/li\u003e\n  \u003cli\u003e4 Digit Box Method Division Mystery Detectives\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more Mini Mystery Detective packs, no-prep math activities, and detective-themed stories for the classroom.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52004116660594,"sku":"12770544","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/area-model-multiplication-3-by-1-digit-worksheets-grade-4-5-12770544.jpg?v=1792460695"},{"product_id":"4-digit-addition-regrouping-mystery-detective-worksheets","title":"4-Digit Addition with Regrouping | Mystery Detective Worksheets | Grades 2–5 | Printable Detective Pack","description":"\u003cp\u003e4 digit addition with regrouping math worksheets for 3rd grade and 4th grade, five Mystery Detective math case files of sixteen sums a page across four columns. Print and go with full answer keys: no prep math activities for morning work, math centers, early finishers, homework and sub plans. Everyday school stories carry the cases, so this 4 digit addition with regrouping practice works in any month for 3rd grade and 4th grade. Teachers use it for 4th grade math review, a math center or a sub plan, and a CSI Mini Mystery Detective marks itself.\u003c\/p\u003e\n\n\u003cp\u003eFour digit addition is a long way to carry for a third grader, and a mystery singer in the music room is what holds them, happily, to the last sum. The pages are self-marking throughout, and the whole set is five math pages in a Mystery Detective download.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBox of Chocolates\u003c\/strong\u003e - a box on the desk, unsigned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMissing Pen\u003c\/strong\u003e - a friend's pen has disappeared\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMystery Singer\u003c\/strong\u003e - somebody is singing in the music room\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActs of Kindness\u003c\/strong\u003e - good deeds and no name\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHoliday Time\u003c\/strong\u003e - a surprise trip, destination unknown\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive case files, each a page of 4 digit addition with regrouping\u003c\/li\u003e\n  \u003cli\u003eSixteen sums per case, set in columns ready to carry\u003c\/li\u003e\n  \u003cli\u003eFour clue lists per page: the who, the where, the when and the what\u003c\/li\u003e\n  \u003cli\u003eA black and white copy of all five cases for everyday printing\u003c\/li\u003e\n  \u003cli\u003eAn answer key for every case\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective is a single page with one crime on it and four short clue lists beside the sums. Every clue carries a number, the questions produce those numbers, and a matching answer strikes that clue out. After sixteen questions the clues left untouched are the solution. The arithmetic is the only route to it, which is why a careless carry cannot slip past unnoticed.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eUse this one when the class has moved past three digits and you want the extra column practiced properly rather than assumed. It is also the right set for the weeks before testing, when multi digit addition is worth a last run. Because everything a student needs is printed on the page, it goes straight into a sub folder or a centers rotation with no explaining.\u003c\/p\u003e\n\n\u003cp\u003eUse it for morning work, math centers, early finishers, homework, test prep, sub plans and homeschool lessons, with a whole class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 3rd grade and 4th grade. Third graders use these at the end of the multi digit addition unit, and fourth graders use them as a fluency set early in the year.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOne missed carry is caught by the page, not by you\u003c\/li\u003e\n  \u003cli\u003eNo preparation of any kind beyond printing\u003c\/li\u003e\n  \u003cli\u003eFive cases makes a full week of warm ups\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners or one student\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52013753434482,"sku":"4939646","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/4-digit-addition-with-regrouping-worksheets-3rd-4th-grade-4939646.jpg?v=1792460958"},{"product_id":"4-digit-subtraction-regrouping-mystery-detective-worksheets","title":"4-Digit Subtraction with Regrouping | Mystery Detective Worksheets | Grades 2–5 | Printable Detective Pack","description":"\u003cp\u003e4 digit subtraction with regrouping math activities for 3rd grade and 4th grade: five math cases in the Mystery Detective format, borrowing across four columns on every page. Print and go with full answer keys: no prep math worksheets for morning work, math centers, early finishers, homework and sub plans. Four digit subtraction with regrouping for 3rd grade and 4th grade, set around school so it fits any month, and the borrowing practice a class needs before moving on. It suits math centers, homework and 4th grade math review, and a CSI Mini Mystery Detective marks itself.\u003c\/p\u003e\n\n\u003cp\u003eBorrowing across four columns is the skill that carries the whole multi digit unit, and a prize with no winner named is what gets the practice done with a smile. The lineup does the checking, so the marking is student-led. One CSI Mini Mystery Detective math case a day covers the week.\u003c\/p\u003e\n\u003cp\u003eSome problems need a borrow in one place and others need it in two or three. Students work each one, then cross off the matching clue in four lists: who, where, when and what. The stories include fruit missing from a lunch box and a library book that never came back.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMystery Present\u003c\/strong\u003e - a gift with no name on it\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActs of Kindness\u003c\/strong\u003e - good deeds around the school\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Missing Fruit\u003c\/strong\u003e - fruit gone from a lunch box\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStudent Prize\u003c\/strong\u003e - who won the prize\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Missing Book\u003c\/strong\u003e - a library book not returned\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFive cases of 4 digit subtraction with regrouping\u003c\/li\u003e\n  \u003cli\u003eFour clue lists on each page\u003c\/li\u003e\n  \u003cli\u003eBlack and white copies of every case\u003c\/li\u003e\n  \u003cli\u003eAnswer keys\u003c\/li\u003e\n  \u003cli\u003eA teacher instruction page\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eStudents read a short crime story, solve the subtraction and cross off clues that match their answers. Each clue has a number beside it. By the end, one clue is left in every list, and that's the solution.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThese work after 4 digit subtraction has been taught, and as a start-of-year check in 4th grade. Try them in a math center, with a small group, on a sub day or in homeschool.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor 3rd grade and 4th grade classes.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBorrowing across four places\u003c\/li\u003e\n  \u003cli\u003ePrint and go\u003c\/li\u003e\n  \u003cli\u003eStudents catch their own mistakes\u003c\/li\u003e\n  \u003cli\u003eSchool stories\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWant more cases like these?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52014359871858,"sku":"4942299","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/4-digit-subtraction-with-regrouping-worksheets-3rd-4th-grade-4942299.jpg?v=1792462370"},{"product_id":"multiplication-csi-mystery-halloween-monster-madness","title":"Multiplication CSI Mystery Worksheets | Grades 4–6 | Monster Madness","description":"\u003cp\u003eAre you looking for a fun 4th, 5th, and 6th grade CSI Mystery Detective to engage your students in multiplication math practice, basic facts, and word problems? Then this printable CSI Mystery Detective is for you!\u003c\/p\u003e\n\n\u003cp\u003eCapture your students' attention with this no-prep mystery by taking them on a journey to solve multiplication puzzles and clues. Students narrow down the possible suspects by completing each math task and marking them off until only one remains. Can your class crack the case?\u003c\/p\u003e\n\n\u003cp\u003eThis printable CSI Mystery Detective is perfect for Halloween, but it also works well at the start of the school year, end-of-year review, or as a seasonal spiral activity. It's also a great fit for homeschool math enrichment and independent learning.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's included:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e2x1 digit multiplication\u003c\/li\u003e\n  \u003cli\u003eMultiplication maze\u003c\/li\u003e\n  \u003cli\u003eMultiplication match-up\u003c\/li\u003e\n  \u003cli\u003eMultiplication basic facts\u003c\/li\u003e\n  \u003cli\u003eMultiplication word problems\u003c\/li\u003e\n  \u003cli\u003eAnswer key included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCSI Mystery Detective packs are independent escape room or crack-the-code types of fun math activities in which students identify suspects using puzzles and word problems instead of locks. This no-prep multiplication review is ideal for reinforcing fact fluency, solving real-world word problems, and bringing seasonal fun to your classroom.\u003c\/p\u003e\n\n\u003cp\u003eUse it for independent work, partner tasks, early finishers, sub plans, math centers, or a fun alternative assessment during the Halloween season.\u003c\/p\u003e\n\n\u003cp\u003eLove this multiplication mystery? Follow Kiwiland Education to discover more seasonal Mystery Detectives, multiplication fluency puzzles, and printable CSI activities for your classroom or homeschool.\u003c\/p\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mystery Detective packs, no-prep math activities, and detective-themed stories for the classroom.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52173838418290,"sku":"12371734","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/2-digit-multiplication-worksheets-mystery-detective-monster-school-printable-12371734.jpg?v=1792460000"},{"product_id":"place-value-csi-mystery-ai-classroom-takeover","title":"Place Value CSI Mystery Worksheets | Grades 3–6 | AI Classroom Takeover","description":"\u003cp\u003eAre you looking for a fun and engaging way to review place value and number sense? This CSI Mystery Detective is a no-prep math packet covering key skills including place value to 1000, 10 more\/10 less, 100 more\/100 less, and ordering numbers. Students will solve math puzzles to narrow down suspects and crack the case!\u003c\/p\u003e\n\n\u003cp\u003eThese CSI Mystery Detective activities turn learning into an adventure. Students complete a series of printable worksheets, using place value strategies and number comparisons to eliminate suspects from the list until one remains. This mystery is ideal for reinforcing key number concepts in a fun and interactive way.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOrdering numbers in the hundreds and thousands\u003c\/li\u003e\n  \u003cli\u003eAddition and subtraction with 10 more and 10 less\u003c\/li\u003e\n  \u003cli\u003eAddition and subtraction of tens, hundreds, and thousands\u003c\/li\u003e\n  \u003cli\u003eGreater than \/ less than with numbers to 1000\u003c\/li\u003e\n  \u003cli\u003eWriting numbers in word form\u003c\/li\u003e\n  \u003cli\u003eAnswer sheets included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCSI Mystery Detective packs are independent escape room or crack-the-code types of fun math activities in which students identify suspects using puzzles and word problems instead of locks. This mystery is perfect for the start of the school year, for end-of-year math review, and for spiral practice all year long. These no-prep activities are also a hit with homeschool students looking for a more interactive way to practice math skills.\u003c\/p\u003e\n\n\u003cp\u003eThis printable place value mystery is designed for 3rd, 4th, and 5th grade students, and it's flexible enough to differentiate for advanced learners or review with those who need extra practice.\u003c\/p\u003e\n\n\u003cp\u003eLove this resource? Follow Kiwiland Education to discover more CSI Mystery Detective packs and receive updates, discounts, and exciting new printables for your classroom or homeschool.\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52173873447282,"sku":"12212740","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/place-value-worksheets-mystery-detective-add-subtract-10-100-1000-printable-12212740.jpg?v=1792460004"},{"product_id":"multi-digit-multiplication-digital-escape-room-crime-city","title":"Multi-Digit Multiplication Digital Escape Room | Math Game | Grades 4–5 | Crime in the City","description":"\u003cp\u003e\u003cstrong\u003eThere's been a crime in the city, and only your students' multiplication skills can crack it.\u003c\/strong\u003e This Multi-Digit Multiplication Digital Escape Room sends Grades 4–5 students on the \"Crime in the City\" case — solving 2-digit by 2-digit, 3-digit by 1-digit, and 4-digit by 1-digit problems with the standard algorithm to unlock each room.\u003c\/p\u003e\u003cp\u003eIt's animated and self-checking, so accuracy matters and the grading takes care of itself.\u003c\/p\u003e\u003ch3\u003eQuick details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade levels:\u003c\/strong\u003e 4–5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Interactive digital escape room, browser-based\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResource type:\u003c\/strong\u003e No-prep math review game \/ center\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkill focus:\u003c\/strong\u003e Multi-digit multiplication (standard algorithm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTech needed:\u003c\/strong\u003e Any device with a web browser (1:1 or shared screen)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe mission\u003c\/h3\u003e\u003cp\u003eA crime has hit the city and the clock is ticking. Students work the case by solving multi-digit multiplication problems — 2x2, 3x1, and 4x1 — entering each answer to unlock the next location until they crack it.\u003c\/p\u003e\u003ch3\u003eHow the escape room works\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOpen the private link in any browser — no app, login, or subscription\u003c\/li\u003e\n\u003cli\u003eStudents solve a series of animated multiplication challenges\u003c\/li\u003e\n\u003cli\u003eEach correct answer reveals a code that unlocks the next room\u003c\/li\u003e\n\u003cli\u003eWrong answers won't open the lock, so it self-checks\u003c\/li\u003e\n\u003cli\u003eCrack the final code to close the case and escape\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFully interactive digital escape room hosted on a private site\u003c\/li\u003e\n\u003cli\u003eAnimated challenges with randomized answers for replayability\u003c\/li\u003e\n\u003cli\u003eNo Boom Cards, Google Slides, logins, or subscriptions\u003c\/li\u003e\n\u003cli\u003eA PDF with your private access link and answer key\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSkills covered\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2-digit by 2-digit multiplication (2x2)\u003c\/li\u003e\n\u003cli\u003e3-digit by 1-digit multiplication (3x1)\u003c\/li\u003e\n\u003cli\u003e4-digit by 1-digit multiplication (4x1)\u003c\/li\u003e\n\u003cli\u003eRegrouping and carrying\u003c\/li\u003e\n\u003cli\u003eApplying the standard algorithm with accuracy\u003c\/li\u003e\n\u003cli\u003eBuilding multiplication fluency\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBest used for\u003c\/h3\u003e\u003cp\u003eMath centers, tech time, early finishers, sub plans, homeschool, spiral and end-of-year review, and distance learning.\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52200214135154,"sku":"13622844","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/MultiDigitMultiplicationDigitalEscapeRoom1.jpg?v=1748478894"},{"product_id":"halloween-mystery-detective-4-digit-addition-subtraction","title":"4-Digit Addition \u0026 Subtraction | Mystery Detective Worksheets | Grades 2–5 | Halloween","description":"\u003cp\u003eHalloween 4 digit addition and subtraction worksheets for 3rd grade and 4th grade, in five CSI Mini Mystery Detective cases with math for October centers or homework. Every problem needs regrouping. They're no prep, with black and white copies and answer keys.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eIn these stories a witch turns the teacher into a frog and a friend into a turtle, and students have to find out who won the costume competition. Each answer matches a clue to cross off. Addition and subtraction are mixed on the page.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFriendly Frog\u003c\/strong\u003e - the teacher has become a frog\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrick or Treat Teacher\u003c\/strong\u003e - a student surprised the teacher\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurtle Trouble\u003c\/strong\u003e - a friend turned into a turtle\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnder The Costume\u003c\/strong\u003e - who is behind the mask\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCostume Competition\u003c\/strong\u003e - the winner of the contest\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFive Halloween cases of 4 digit addition and subtraction\u003c\/li\u003e\n  \u003cli\u003eRegrouping in every problem\u003c\/li\u003e\n  \u003cli\u003eBlack and white copies\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for every case\u003c\/li\u003e\n  \u003cli\u003eTeacher instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt's a single page per case. The problems are on the left, the clue lists on the right, and each clue has a number. Students cross off what matches, and one clue is left in each list.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThese fit the weeks around Halloween. 4th graders can use them as review of both operations, and 3rd graders once 4 digit work has started. Use them for morning work, early finishers, sub days or homeschool.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWritten for 3rd grade and 4th grade, as October practice.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eA Halloween theme\u003c\/li\u003e\n  \u003cli\u003eBoth operations in one pack\u003c\/li\u003e\n  \u003cli\u003eNo prep\u003c\/li\u003e\n  \u003cli\u003eStudents check their own answers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWant more cases like these?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52291322052978,"sku":"4945170","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/halloween-4-digit-addition-and-subtraction-worksheets-3rd-4th-grade-4945170.jpg?v=1792462370"},{"product_id":"place-value-mystery-detective-word-to-standard-form","title":"Place Value: Word Form to Standard Form | Mystery Detective Worksheets | Grades 1–4 | Printable Detective Pack","description":"\u003cp\u003eWord form to standard form place value worksheets for 2nd grade and 3rd grade: five Mystery Detective math cases, three digit numbers throughout. Print and go with full answer keys: no prep place value math activities for math centers, morning work, early finishers, homework and sub plans. Place value practice for 2nd grade and 3rd grade, reading three digit numbers in word form and writing them in standard form, set around school so it fits any week of the place value unit. It works as a math center, morning work or place value review, and a CSI Mini Mystery Detective marks itself.\u003c\/p\u003e\n\n\u003cp\u003eReading three digit numbers written out in words is taught once and then assumed, and this is the practice that keeps it honest, because students see straight away whether they read each hundred, ten and one correctly. One case fits a morning work slot, so the five cover a week of the place value unit, and each CSI Mini Mystery Detective math page is self-marking.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBox of Chocolates\u003c\/strong\u003e - a box on the desk, unsigned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMissing Toy\u003c\/strong\u003e - a classmate's toy has gone\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCaught Being Good\u003c\/strong\u003e - somebody doing the right thing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Missing Teacher\u003c\/strong\u003e - a teacher nowhere in school\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Teachers Lunch\u003c\/strong\u003e - the staffroom lunch has vanished\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive case files, each a page of word form to standard form conversions\u003c\/li\u003e\n  \u003cli\u003eSixteen numbers per case, all of them three digits\u003c\/li\u003e\n  \u003cli\u003eClue lists beside the questions, so one answer removes one clue\u003c\/li\u003e\n  \u003cli\u003eA black and white copy of all five cases for everyday printing\u003c\/li\u003e\n  \u003cli\u003eAn answer key for every case\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective is one printed page with a crime on it and short clue lists beside the questions. Every clue carries a number, the answers on the page produce those numbers, and a match strikes that clue out. The clues left at the end are the solution. Nothing is cut, laminated or charged, and reading the number correctly is the only way through.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis is the set for the place value unit, in the week after word form has been introduced and students are still sounding numbers out. It is also worth a run before testing, because word form questions appear on papers long after the unit has finished and they are easy marks to drop. All the instructions are on the page, so it goes into a sub folder as it is.\u003c\/p\u003e\n\n\u003cp\u003eUse it for morning work, math centers, early finishers, homework, test prep, sub plans and homeschool lessons, with a whole class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 2nd grade and 3rd grade. Second graders use these inside the place value unit, and third graders use them as a quick check that word form stuck over the summer.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eA misread number matches no clue, so students go back and look\u003c\/li\u003e\n  \u003cli\u003eNo preparation of any kind beyond printing\u003c\/li\u003e\n  \u003cli\u003eFive cases makes a week of place value warm ups\u003c\/li\u003e\n  \u003cli\u003eSuits a whole class, a small group, partners or one student\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52291331850610,"sku":"4949899","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/word-form-to-standard-form-3-digit-place-value-worksheets-2nd-grade-4949899.jpg?v=1792461820"},{"product_id":"place-value-csi-mystery-pirate-worksheets","title":"Place Value CSI Mystery Worksheets | Grades 3–6 | The Pizza Pirate","description":"\u003cp\u003eLooking for a fun and engaging way to review place value? This \u003cstrong\u003ePirate-themed CSI Mystery Detective\u003c\/strong\u003e is packed with place value math activities designed to strengthen your students' understanding of numbers to 1,000 — including \u003cstrong\u003e10 more\/less\u003c\/strong\u003e, \u003cstrong\u003e100 more\/less\u003c\/strong\u003e, \u003cstrong\u003egreater than\/less than\u003c\/strong\u003e, and \u003cstrong\u003eordering numbers\u003c\/strong\u003e. Ideal for \u003cstrong\u003e3rd grade and 4th grade place value review\u003c\/strong\u003e, with bonus support for \u003cstrong\u003estruggling 5th grade learners\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eThis fun escape-room-style CSI Mystery Detective will have your students solving problems and cracking clues to uncover the culprit. No locks needed — just engaging puzzles and elimination-style detective work.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThis Place Value Pirate CSI Mystery Detective includes:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOrdering numbers in the hundreds and thousands\u003c\/li\u003e\n  \u003cli\u003e10 more \/ 10 less and 100 more \/ 100 less\u003c\/li\u003e\n  \u003cli\u003eComparing numbers to 1,000 using greater than and less than\u003c\/li\u003e\n  \u003cli\u003eAdding and subtracting 2- and 3-digit numbers\u003c\/li\u003e\n  \u003cli\u003eAnswer key included for easy grading\u003c\/li\u003e\n  \u003cli\u003eColor and black \u0026amp; white versions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eUse this CSI Mystery Detective for:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eA back-to-school place value review\u003c\/li\u003e\n  \u003cli\u003eNo-prep math centers or sub plans\u003c\/li\u003e\n  \u003cli\u003eEngaging test prep or early finisher activities\u003c\/li\u003e\n  \u003cli\u003eEnd-of-year math spiral review\u003c\/li\u003e\n  \u003cli\u003eHomeschool enrichment or reinforcement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCSI Mystery Detective packs are independent escape room or crack-the-code style math activities.\u003c\/strong\u003e Instead of physical locks, students solve math problems to eliminate suspects and crack the case.\u003c\/p\u003e\n\n\u003cp\u003eLove this resource? Follow Kiwiland Education to explore more engaging Mystery Detectives and be the first to hear about new releases, special discounts, and fresh printables for your classroom.\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52292775543154,"sku":"10131652","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/place-value-worksheets-and-activities-1-10131652.jpg?v=1792460004"},{"product_id":"decimals-multiplication-csi-mystery-worksheets-grades-4-6-aliens-in-the-attic","title":"Decimals \u0026 Multiplication CSI Mystery Worksheets | Grades 4–6 | Aliens in the Attic","description":"\u003cp\u003eCSI Mystery Detective decimals work for 5th grade and 6th grade: adding, subtracting and multiplying decimals, and comparing which is greater, on one set of CSI math worksheets. It covers adding and subtracting decimals, then pushes into multiplying decimals with large answers, a strong March activity ahead of testing season. Something has lived in the attic a while, and its decimals are the only clue to how many eyes and arms it has. Color and black-and-white pages are both included, so it goes straight from printer to desk. Students compare, add along a path and color a multiplication trail, crossing off a suspect per correct answer, with answer keys to close the mystery.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: Aliens in the Attic\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eOne stormy night you go to bed early with a book, listening to the rain lashing the window and the trees thrashing in the wind. Then, over the top of the storm, something moves in the attic. It is not the wind, and it is not the house settling. Whatever is up there has been there a while, and the only way to work out what it is - and how many eyes and arms it has - is to solve the decimals it left behind.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eComparing decimals to decide which is greater and which is lesser\u003c\/li\u003e\n  \u003cli\u003eAdding decimals along a path where the running total settles the clue\u003c\/li\u003e\n  \u003cli\u003eMultiplying decimals, including problems with large answers\u003c\/li\u003e\n  \u003cli\u003eSubtracting decimals to check a suspect off the line-up\u003c\/li\u003e\n  \u003cli\u003eA color-the-arrow trail that only works if the multiplication is right\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mystery Detective case turns a page of math into evidence. Students solve, each correct answer strikes one name off the suspect list, and the case closes on the last one standing. There is nothing to unlock, download or prepare - it is a math escape room made of paper. Detective activities also police themselves in a way ordinary math worksheets cannot: an error leaves a culprit nobody can arrest, so the class goes back over it. A math activity that carries a lesson, a center rotation, or a sub plan.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eDecimal review before or after a unit test\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eEnd of year review, when attention is thin and the work still has to happen\u003c\/li\u003e\n  \u003cli\u003eWhole-class detective sessions, small groups or partner work\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 5th grade, and it carries comfortably into 6th grade. Fourth graders who have met decimals can manage it with support, usually working in pairs on the multiplication pages. It also gives older students who need decimal review something to work on that does not look like remedial work.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eDecimal practice students will actually finish\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61951264620914,"sku":"4016786","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/aliens-in-the-attic-csi-mystery-detective-decimals-grades-4-6-4016786.jpg?v=1792459542"},{"product_id":"place-value-csi-mystery-grades-2-4-place-value-bandit-in-the-classroom","title":"Place Value CSI Mystery Worksheets | Grades 2–4 | Place Value Bandit in the Classroom","description":"\u003cp\u003ePlace value, ordering and comparing numbers for 2nd grade, 3rd grade and 4th grade: the Place Value Bandit has been through the classroom overnight and moved every digit, and this CSI Mystery Detective case is how students catch the thief. Nothing on the walls adds up, so students order three-digit and four-digit numbers from smallest to biggest, compare pairs to find the greater, and read off letters that spell the culprit's name. It plays like a paper-based math escape room for January, with CSI math worksheets in color and black and white plus answer keys. Checking worked answers for errors and a word puzzle that only resolves when the ordering is right close the mystery.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: The Place Value Bandit in the Classroom\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eSomeone has been through the classroom overnight and moved every digit. Small numbers are now bigger than large ones, decimal points have wandered, and nothing on the walls adds up any more. The Place Value Bandit has been and gone, and the only way to work out who it was is to put the numbers back in the right order and read what they spell.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOrdering numbers from smallest to biggest, then reading a letter off each line\u003c\/li\u003e\n  \u003cli\u003eComparing two numbers on a seesaw to decide which is greater\u003c\/li\u003e\n  \u003cli\u003ePlace value problems with three-digit and four-digit numbers\u003c\/li\u003e\n  \u003cli\u003eChecking worked answers for errors and tallying which are correct\u003c\/li\u003e\n  \u003cli\u003eA word rearrangement puzzle that only resolves if the ordering is right\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mystery Detective case is a printable investigation your class closes with math. Each correct answer eliminates one suspect from the line-up, and the case ends when a single name is left. It behaves like a math escape room minus the locks, the app and the setup - you print it and hand it out. What separates detective activities from a stack of math worksheets is that the arithmetic has consequences, so students check their own before handing it in. It carries a whole math activity, a center rotation, or a sub plan.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003ePlace value review before or after a unit test\u003c\/li\u003e\n  \u003cli\u003eBack-to-school weeks and end of year review\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eWhole-class detective sessions, small groups or partner work\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 2nd grade, 3rd grade and 4th grade. Second graders usually work the four-digit pages in pairs; third and fourth graders can run the case independently. It also gives 5th grade students who need place value review something worth doing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003ePlace value practice with a reason to be accurate\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61951437013362,"sku":"4836651","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/place-value-bandit-classroom-mystery-detective-grades-2-4-4836651.jpg?v=1792460004"},{"product_id":"2-digit-by-2-digit-multiplication-mystery-detective-worksheets-grades-3-6-printable-detective-pack","title":"2-Digit by 2-Digit Multiplication | Mystery Detective Worksheets | Grades 3–6 | Printable Detective Pack","description":"\u003cp\u003eMulti digit multiplication worksheets for 4th grade and 5th grade, 2 digit by 2 digit throughout, five math cases under Mystery Detective rules with the full algorithm on every problem. No prep, print and go, full answer keys and a black and white set, for math centers, morning work, early finishers, homework, test prep and sub plans in any month. For 4th grade and 5th grade students who know the method and need it to stick, this is 2 digit by 2 digit multiplication practice with a school mystery on every page to keep them at it. It suits a math center, a homework week or a test prep run, and the CSI Mini Mystery Detective format means students check their own work.\u003c\/p\u003e\n\n\u003cp\u003eTwo by two digit multiplication is the first time students carry a partial product and then add, and it takes practice to get steady. The case format makes that practice something they ask for, and the marking is student-led, with answer keys included. Twenty products a page and five pages of math lead to one Mystery Detective culprit at the end.\u003c\/p\u003e\n\u003cp\u003eStudents set out each problem with the standard algorithm, then look for the product among the clues on the right of the page. A matching clue gets crossed off. The cases are school stories, like a stolen skateboard and a box of chocolates left on the teacher's desk, and the student is the investigator. Every page checks itself as they go.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Missing Skateboard\u003c\/strong\u003e - a friend's skateboard stolen\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTeacher Appreciation Gift\u003c\/strong\u003e - who left the teacher a gift\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Singer\u003c\/strong\u003e - someone singing in the music room\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChocolates\u003c\/strong\u003e - an unsigned box of chocolates\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActs Of Kindness\u003c\/strong\u003e - good deeds around the school\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFive case pages in color\u003c\/li\u003e\n  \u003cli\u003eThe same five cases in black and white\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for every case\u003c\/li\u003e\n  \u003cli\u003eA teacher instruction page\u003c\/li\u003e\n  \u003cli\u003e2 digit by 2 digit multiplication on every page\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach case fits on one page. The problems are on the left and the clue lists are on the right, and every clue has a number. When an answer matches a clue, the student crosses it off. The clues that are still there at the end tell them who did it.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUse these after the standard algorithm has been taught, when students need more problems to work through on their own. They're also useful the week before a multiplication test. Hand one out for morning work, send one home, or leave the set in your sub folder.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWritten for 4th grade and 5th grade. 6th graders who still need multi digit multiplication practice can use them too.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNo prep\u003c\/li\u003e\n  \u003cli\u003eColor and black and white in one download\u003c\/li\u003e\n  \u003cli\u003eStudents can see when a product doesn't match\u003c\/li\u003e\n  \u003cli\u003eFive separate cases\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWant more cases like these?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955130425714,"sku":"5025073","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/2-digit-by-2-digit-multiplication-worksheets-grade-5-5025073.jpg?v=1792462230"},{"product_id":"4-digit-subtraction-with-regrouping-mystery-detective-worksheets-grades-2-5-robot-theme","title":"4-Digit Subtraction with Regrouping | Mystery Detective Worksheets | Grades 2–5 | Robot Theme","description":"\u003cp\u003e4 digit subtraction with regrouping worksheets for 3rd grade and 4th grade, a robot themed math game of five Mystery Detective cases with sixteen problems each. No prep, print and go, with full answer keys, for math centers, morning work, early finishers, homework, test prep and sub plans any week of the year. Space bandits, drained robot oil and a machine that has malfunctioned carry the story, students borrow across zeros and match every answer to a clue, and a dropped digit simply never appears on the list, so they find it themselves at problem three rather than at marking time, all inside one CSI Mini Mystery Detective download that owes nothing to a holiday.\u003c\/p\u003e\n\n\u003cp\u003eFour digit subtraction asks for two borrows in the same problem, and this pack is where a student learns to trust their own answer. The clue list only carries the right ones, so they hunt down any digit they dropped themselves. The robots keep them at it until the borrowing is automatic, five robot math pages, Mystery Detective style, and not a pumpkin in sight.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSpace Bandits - something has been taken from the ship\u003c\/li\u003e\n  \u003cli\u003eMissing Robot Oil - the supply has drained away overnight\u003c\/li\u003e\n  \u003cli\u003eRobot Malfunction - working out which machine failed\u003c\/li\u003e\n  \u003cli\u003eRobot Color - a paint job nobody owns up to\u003c\/li\u003e\n  \u003cli\u003eBad Robot - the last case, and the hardest to pin down\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive robot case files, sixteen subtraction problems on each\u003c\/li\u003e\n  \u003cli\u003eFour digit subtraction with regrouping throughout\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for all five cases\u003c\/li\u003e\n  \u003cli\u003eSuspect and clue lists printed beside the problems\u003c\/li\u003e\n  \u003cli\u003eA teacher instruction page - print and go, nothing to cut\u003c\/li\u003e\n  \u003cli\u003eOne download, no prep, no laminating\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eOne printed page holding one crime and the clue lists that solve it. Every clue carries a number, the sixteen problems on the page produce those numbers, and a correct answer crosses a clue off. Work to the last question and a single suspect is left standing. Drop a borrow and nothing matches, so the page checks itself.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eReach for this after four digit subtraction has been taught and needs practicing until it sticks, which is normally the middle of 3rd grade. It also works as revision at the start of 4th grade, before long division puts the same borrowing under pressure. Nothing in it is seasonal, so it can run in any month. Use it for math centers, morning work, early finishers, homework, sub plans and homeschool lessons, with a whole class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 3rd grade and 4th grade, and useful in 5th grade for students who still need subtraction firmed up before they meet decimals.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eA wrong answer matches no clue, so students find their own slips\u003c\/li\u003e\n  \u003cli\u003eRobots hold a class that has gone cold on plain worksheets\u003c\/li\u003e\n  \u003cli\u003eFive cases is a full week from one print run\u003c\/li\u003e\n  \u003cli\u003eWorks any month - nothing in it is tied to a season\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eLove this resource?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955315794290,"sku":"5319817","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/4-digit-subtraction-with-regrouping-worksheets-3rd-4th-grade-5319817.jpg?v=1792460961"},{"product_id":"4-digit-addition-and-subtraction-mystery-detective-worksheets-grades-2-5-thanksgiving-theme","title":"4-Digit Addition and Subtraction | Mystery Detective Worksheets | Grades 2–5 | Thanksgiving Theme","description":"\u003cp\u003eThanksgiving 4 digit addition and subtraction worksheets for 3rd grade and 4th grade, five turkey math cases, each a Mystery Detective page of sixteen sums across four columns. Print and go with full answer keys: November math activities, no prep, for morning work, math centers, early finishers, homework and sub plans. For 3rd grade and 4th grade, this is 4 digit addition and subtraction with regrouping in a Thanksgiving setting, the turkey math a class will finish in the week of the holiday. Use it as a November math center, a homework set or a sub plan, and the CSI Mini Mystery Detective format means students check their own work.\u003c\/p\u003e\n\n\u003cp\u003eFour digit columns in the week of a holiday get finished when there is a stolen turkey to find, because the only way to the thief is through the sums. The pages are self-marking, with an answer key for every case. Any CSI Mini Mystery Detective math case left over is a math center in December.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Missing Turkey\u003c\/strong\u003e - somebody has taken the turkey\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThanksgiving Party\u003c\/strong\u003e - an invitation with no sender\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActs of Kindness\u003c\/strong\u003e - good deeds and nobody owning up\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWho is Carving the Turkey\u003c\/strong\u003e - the feast needs a carver\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThank You Gift\u003c\/strong\u003e - a gift on the desk, unsigned\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive Thanksgiving cases, each a page of 4 digit addition and subtraction\u003c\/li\u003e\n  \u003cli\u003eSixteen questions per case, with regrouping across four columns\u003c\/li\u003e\n  \u003cli\u003eClue lists beside the questions, so one answer removes one clue\u003c\/li\u003e\n  \u003cli\u003eA black and white copy of all five cases for everyday printing\u003c\/li\u003e\n  \u003cli\u003eAn answer key for every case\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective is one page holding a crime and the clue lists that solve it. Each clue carries a number, the questions produce those numbers, and a correct answer crosses that clue off until only the solution is left. It behaves like an escape room with no locks, no app and nothing to charge, and working the four columns accurately is the only key to it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis is the November set for an older elementary class, best used in the short week before the holiday when nothing ordinary will hold. It is also worth keeping for a multi digit review later in the year, since the questions are a standard four column set and the theme sits over the top rather than inside the mathematics. All the instructions are printed on the page.\u003c\/p\u003e\n\n\u003cp\u003eUse it for morning work, math centers, early finishers, homework, test prep, sub plans and homeschool lessons, with a whole class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 3rd grade and 4th grade. Third graders use these once four digit work has begun, and fourth graders use them as a November review of both operations.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eLong columns still get finished in a short holiday week\u003c\/li\u003e\n  \u003cli\u003ePrint and hand out, with nothing to prepare\u003c\/li\u003e\n  \u003cli\u003eFive cases covers the run up to Thanksgiving\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners or one student\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955319234930,"sku":"4995663","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/thanksgiving-4-digit-addition-and-subtraction-worksheets-3rd-4th-grade-4995663.jpg?v=1792460828"},{"product_id":"4-digit-subtraction-with-regrouping-mystery-detective-worksheets-grades-3-6-christmas-theme","title":"4-Digit Subtraction with Regrouping | Mystery Detective Worksheets | Grades 3–6 | Christmas Theme","description":"\u003cp\u003e4 digit subtraction with regrouping Christmas math worksheets for 3rd grade and 4th grade, five Mystery Detective math cases with borrowing across four columns on every page. No prep December math activities with full answer keys, print and go, for math centers, early finishers, homework, morning work and sub plans. Four digit subtraction with regrouping is the biggest borrowing of the year, and this pack gives 3rd grade and 4th grade students a school Christmas reason to practice it. It is December math that runs as a math center, a sub plan or a homework set, and every CSI Mini Mystery Detective page is self-marking.\u003c\/p\u003e\n\n\u003cp\u003eKeep this one for the week before the break, because a class can run these CSI Mini Mystery Detective math cases without you at the front and a substitute has nothing to explain. Students subtract, match each answer to a suspect and cross that name off, so the marking is student-led even on the biggest borrowing of the year.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMissing Marshmallows\u003c\/strong\u003e - the marshmallows disappear overnight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTeachers Christmas Lunch\u003c\/strong\u003e - who cooked the staffroom lunch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChristmas Presents\u003c\/strong\u003e - who gets to unwrap first\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMissing Candy Canes\u003c\/strong\u003e - stripped straight off the tree\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChristmas Star\u003c\/strong\u003e - who puts the star on top\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive case files, each with a crime sheet and its own lineup of suspects\u003c\/li\u003e\n  \u003cli\u003eFour digit subtraction with regrouping on every page\u003c\/li\u003e\n  \u003cli\u003eBorrowing across four columns, the hardest subtraction at this level\u003c\/li\u003e\n  \u003cli\u003eEach answer matches one suspect and no other, so the page checks itself\u003c\/li\u003e\n  \u003cli\u003eA full answer key for every case\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective is a printable case with a lineup of suspects, each carrying a number. The questions on the crime sheet produce those numbers, a correct answer strikes one suspect off, and the last name standing is the culprit. The elimination only works when the math is right, which is what makes these detective activities show up mistakes a page of math worksheets would hide.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFour digit borrowing is the skill that most needs repetitions and least often gets them, and November and December is when the timetable has the least room for it. Five short cases fix both problems at once. Because one wrong borrow puts the wrong name in the frame, students trace the error back through the columns themselves instead of handing you the page.\u003c\/p\u003e\n\n\u003cp\u003eIt covers test prep, homework, math centers, morning work, early finishers, sub plans, homeschool lessons and spiral review, with a class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 3rd grade and 4th grade, where four digit subtraction sits in the standards. Fifth graders use it as a fluency refresher, and second graders take it once three digit borrowing is secure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive pages on the hardest subtraction third and fourth graders meet\u003c\/li\u003e\n  \u003cli\u003eStudents trace a wrong borrow back when the wrong name comes off\u003c\/li\u003e\n  \u003cli\u003eNo prep in the busiest month of the year\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners, or one student alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955344138610,"sku":"5035455","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/christmas-4-digit-subtraction-with-regrouping-grade-4-5035455.jpg?v=1792461132"},{"product_id":"3-digit-box-method-long-division-no-remainders-mystery-detective-worksheets-grades-3-7-monster-theme","title":"3-Digit Box Method Long Division (No Remainders) | Mystery Detective Worksheets | Grades 3–7 | Monster Theme","description":"\u003cp\u003eGrade 4 and grade 5 box method division, 3 digit dividends by a single digit with no remainders: one CSI Mini Mystery Detective math case across five crime sheets, where each quotient crosses a suspect off the lineup until the Monster Among Us is found. Division worksheets that check themselves, because a quotient that matches no suspect sends the student back into the box. Print and go with full answer keys, for the division unit, math centers, early finishers, homework, morning work and sub plans.\u003c\/p\u003e\n\n\u003cp\u003eThree digit dividends are where the box method earns its place, and a class will work through five CSI Mini Mystery Detective math sheets to find the monster when they would stall on a plain page. Use one sheet a day in the week you teach the method, and keep the set for spiral review before long division proper.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMonster Among Us\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA monster has joined the class, and the only way to work out which one it is, is to divide. Every quotient a student lands on takes one suspect off the lineup, and all five crime sheets run this same case, so the hunt carries on from one page to the next until a single name is left.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive crime sheets, each with its own lineup of suspects, all running the one case\u003c\/li\u003e\n  \u003cli\u003eBox method division with a 3 digit dividend and a single digit divisor\u003c\/li\u003e\n  \u003cli\u003eNo remainders, so every quotient matches a suspect exactly\u003c\/li\u003e\n  \u003cli\u003eEach answer matches one suspect and no other, so the page checks itself\u003c\/li\u003e\n  \u003cli\u003eA full answer key for every sheet\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective is a printed case with a lineup of suspects, each carrying a number. The questions on the crime sheet produce those numbers, a correct answer strikes one suspect off, and the last name standing is the culprit. The elimination only works when the math is right, which is what makes these detective activities catch errors that a page of math worksheets would let through. One case fits one class period, with nothing to prepare.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eUse this the day after you introduce the box method, while students still need the steps in front of them but not another worked example. Three digit dividends and no remainders keep the load light enough that the method is what they are thinking about. Because the wrong quotient takes out the wrong suspect, a student who drops a step finds out immediately instead of repeating it five times.\u003c\/p\u003e\n\n\u003cp\u003eIt carries test prep, homework, math centers, morning work, early finishers, sub plans and homeschool lessons, with a class, a small group or a single student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 4th grade and 5th grade, where dividing by a single digit sits in the standards. Third graders take it once they know their division facts, and 6th graders use it as a quick refresher before moving to two digit divisors.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eThree digit dividends, which is the right size for a first week with the method\u003c\/li\u003e\n  \u003cli\u003eStudents see a dropped step straight away when the wrong name comes off\u003c\/li\u003e\n  \u003cli\u003eNo prep, and the answer key makes grading quick\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners, or one student alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955361997170,"sku":"8973893","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/box-method-long-division-3-digit-worksheets-4th-grade-8973893.jpg?v=1792460695"},{"product_id":"4-digit-box-method-long-division-no-remainders-mystery-detective-worksheets-grades-3-7-monster-theme","title":"4-Digit Box Method Long Division (No Remainders) | Mystery Detective Worksheets | Grades 3–7 | Monster Theme","description":"\u003cp\u003eBox method division worksheets for 5th grade and 6th grade, 4 digit dividends by a single digit with no remainders, so every quotient lands on a suspect exactly. One CSI Mini Mystery Detective math case runs across five crime sheets: students work each division in the box, cross a suspect off the lineup and close in on the Monster Among Us. Self-checking math activities for the week the box method is taught, then math centers, early finishers, homework and sub plans, no prep, full answer keys.\u003c\/p\u003e\n\n\u003cp\u003eThe box method only sticks if students use it for a full week while the steps are still in front of them, and five sheets that run one CSI Mini Mystery Detective math case is the set for that week. Each quotient has to match a name, so a slip inside the box shows up on the lineup and they go back themselves rather than handing it to you.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMonster Among Us\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA monster is sitting in class and nobody has spotted which one. Students divide their way through the lineup and each quotient crosses off another suspect. All five crime sheets run this one case, so the class keeps narrowing it down page after page until the last name standing is the monster.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive crime sheets, each with its own lineup of suspects, all running the one case\u003c\/li\u003e\n  \u003cli\u003eBox method division with a 4 digit dividend and a single digit divisor\u003c\/li\u003e\n  \u003cli\u003eNo remainders anywhere, so every quotient lands on a suspect exactly\u003c\/li\u003e\n  \u003cli\u003eEach answer matches one suspect and no other, so the page checks itself\u003c\/li\u003e\n  \u003cli\u003eA full answer key for every sheet\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective puts a crime, a lineup and a page of math in front of your class, and the only way to name the culprit is to get the math right. Each suspect carries a number, each solved question matches one of them, and that suspect is crossed off until a single name remains. Because a wrong quotient eliminates the wrong person, these detective activities make students check their work in a way math worksheets cannot. One case takes a class period.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis belongs in the week you teach the box method, when students can follow the steps with you at the board and then lose the thread on their own. Keeping remainders out means nothing distracts from the method itself, and the case running across all five sheets keeps the class going to the end of the set. A slip in any box crosses off the wrong suspect, so they find it and work back.\u003c\/p\u003e\n\n\u003cp\u003eUse it for test prep, homework, math centers, morning work, early finishers, sub plans and homeschool lessons, with a whole class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 5th grade and 6th grade, where multi digit division sits in the standards. Fourth graders take it once the box method is taught and the no remainder scope keeps the focus on the steps, and 7th graders use it as fluency practice before decimal quotients.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNo remainders, so the box method itself is the only thing being practiced\u003c\/li\u003e\n  \u003cli\u003eStudents trace their own mistake back when the wrong suspect comes off\u003c\/li\u003e\n  \u003cli\u003eNo prep, and the answer key makes grading quick\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners, or one student alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary and middle school classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955362619762,"sku":"9072036","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/box-method-long-division-4-digit-worksheets-4th-grade-9072036.jpg?v=1792460958"},{"product_id":"4-digit-subtraction-with-regrouping-mystery-detective-worksheets-grades-2-5-zoo-safari-theme","title":"4-Digit Subtraction with Regrouping | Mystery Detective Worksheets | Grades 2–5 | Zoo Safari Theme","description":"\u003cp\u003eZoo animals 4 digit subtraction with regrouping worksheets for 3rd grade and 4th grade, five math activities run as Mystery Detective cases at the zoo. Print and go, no prep, full answer keys and a black and white set, for math centers, morning work, early finishers, homework and sub plans, any month and any animal unit. The zoo setting suits an animal unit, a zoo trip or any month a class needs the practice, and underneath it is 4 digit subtraction with regrouping, borrowing across zeros included, for 3rd grade and 4th grade. It works as a math center, a homework set or a sub plan, and a CSI Mini Mystery Detective is a page students finish rather than put down.\u003c\/p\u003e\n\n\u003cp\u003eFour digit subtraction is where borrowing across a zero becomes second nature, given enough of them. A case gives that mileage happily, and students check their own borrowing as they cross the suspects off. Pair it with the safari addition pack and the zoo carries a whole week of math in Mystery Detective style.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eThe Tigers Stripes - a count nobody can agree on\u003c\/li\u003e\n  \u003cli\u003eThe Missing Fruit - somebody has taken it\u003c\/li\u003e\n  \u003cli\u003eMidnight Calls - working out who was where\u003c\/li\u003e\n  \u003cli\u003eZoo Prize - a total that does not add up\u003c\/li\u003e\n  \u003cli\u003eAnimal Escape - the last case of the set\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive color case pages, sixteen subtraction problems on each\u003c\/li\u003e\n  \u003cli\u003eThe same five cases again in black and white\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for all five cases\u003c\/li\u003e\n  \u003cli\u003eA color in page for early finishers\u003c\/li\u003e\n  \u003cli\u003eA teacher instruction page, print and go with nothing to prepare\u003c\/li\u003e\n  \u003cli\u003eFour digit subtraction with regrouping throughout\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eOne printed page holding one crime and the clue list that solves it. Each clue carries a number, the sixteen problems on the page produce those numbers, and a correct answer knocks a clue out. Work to the last question and a single suspect is left standing. Get one wrong and nothing matches, which sends a student back over their working before you ever see it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eReach for this once column subtraction has been taught and simply needs keeping warm, or as review before a test. It fits an animal or zoo unit, a class trip week, and any season from fall through winter to spring. Use it for math centers, morning work, early finishers, homework, sub plans and homeschool lessons, with a whole class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 3rd grade, 4th grade and 5th grade. Sixth graders who still need borrowing firmed up get real use out of it, and a strong second grader will manage the early cases with support.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eA wrong answer matches no clue, so students catch their own slips\u003c\/li\u003e\n  \u003cli\u003eColor and black and white are both in the download\u003c\/li\u003e\n  \u003cli\u003eA color in page for whoever finishes first\u003c\/li\u003e\n  \u003cli\u003eFive cases covers a full week of centers from one print run\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eLove this resource?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no prep math activities, and detective themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955365601650,"sku":"4975358","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/4-digit-subtraction-with-regrouping-worksheets-grade-4-4975358.jpg?v=1792460960"},{"product_id":"4-digit-addition-with-regrouping-mystery-detective-worksheets-grades-2-5-christmas-theme","title":"4-Digit Addition with Regrouping | Mystery Detective Worksheets | Grades 2–5 | Christmas Theme","description":"\u003cp\u003eChristmas 4 digit addition with regrouping math activities for 3rd grade and 4th grade: five math worksheets in the Mystery Detective format, carrying across four columns throughout. Print and go with full answer keys, no prep, for December math centers, early finishers, homework, morning work and sub plans. Christmas math for 3rd grade and 4th grade that still does real work: 4 digit addition with regrouping, carrying across every column, inside a school Christmas mystery. Teachers use it as a December math center, a homework week or a Christmas math review, and one CSI Mini Mystery Detective download covers the week.\u003c\/p\u003e\n\n\u003cp\u003eThe last week before the break is when this one earns its place, and four digit addition with a secret Santa to find keeps a fourth grade class happily on the page right up to the bell. Every page is self-marking, and one CSI Mini Mystery Detective math case a day covers the week.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWho is Secret Santa\u003c\/strong\u003e - a gift arrives with no name\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChristmas Cheer\u003c\/strong\u003e - kindness turning up all December\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSinging Christmas Carols\u003c\/strong\u003e - somebody is singing down the hall\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMissing Xmas Present\u003c\/strong\u003e - a gift goes astray before Christmas\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurkey Trouble\u003c\/strong\u003e - nobody will carve the bird\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive case files, each with a crime sheet and its own lineup of suspects\u003c\/li\u003e\n  \u003cli\u003eFour digit addition with regrouping on every page\u003c\/li\u003e\n  \u003cli\u003eCarrying across four columns, a step up from three digit work\u003c\/li\u003e\n  \u003cli\u003eEach answer matches one suspect and no other, so the page checks itself\u003c\/li\u003e\n  \u003cli\u003eA full answer key for every case\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective puts a crime, a lineup and a page of math in front of your class, and the only way to name the culprit is to get the math right. Each suspect carries a number, each solved question matches one of them, and that suspect is crossed off until a single name remains. Because a wrong sum eliminates the wrong person, these detective activities make students check their work in a way math worksheets cannot.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eUse this in December once three digit carrying is secure, when you want the class moving on to four columns and you need it to happen without a fight. The Christmas setting buys you the attention and the math underneath is unchanged. A carry dropped in the thousands column names the wrong suspect, so students go back and check rather than waiting for the page to be graded.\u003c\/p\u003e\n\n\u003cp\u003eTeachers use it for test prep, homework, math centers, morning work, early finishers, sub plans and homeschool lessons, with a class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 3rd grade and 4th grade, where four digit addition sits in the standards. Fifth graders take it as a quick refresher, and second graders manage it once three digit carrying is secure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMoves the class up to four columns without a fight\u003c\/li\u003e\n  \u003cli\u003eStudents check their own work when the wrong suspect comes off\u003c\/li\u003e\n  \u003cli\u003eNo prep in December\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners, or one student alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955376841074,"sku":"5035066","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/christmas-4-digit-addition-with-regrouping-grade-4-5035066.jpg?v=1792460828"},{"product_id":"4-digit-subtraction-with-regrouping-mystery-detective-worksheets-grades-3-5-valentines-day","title":"4-Digit Subtraction with Regrouping | Mystery Detective Worksheets | Grades 3–5 | Valentine's Day","description":"\u003cp\u003e4 digit subtraction with regrouping worksheets for 3rd grade and 4th grade, five Valentines Day math activities as Mystery Detective cases, borrowing across four columns throughout. No prep February math activities with full answer keys, print and go, for early finishers, math centers, homework, morning work and sub plans. Flowers left overnight, a card with no signature and a bouquet with the label torn off carry the week, and every answer matches one suspect only and crosses them off the lineup, and a CSI Mini Mystery Detective gets four digit borrowing done in the week nobody wants to do it.\u003c\/p\u003e\n\n\u003cp\u003eFour digit subtraction is the biggest borrowing a third grader meets, and a valentine to trace is what gets five CSI Mini Mystery Detective math cases done in the second half of February. The lineup does the checking, so the marking is student-led and a glance at the key is all you need.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBunch of Flowers\u003c\/strong\u003e - left on the teacher's desk overnight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eValentines Day Card\u003c\/strong\u003e - a card with no signature\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eValentines Day Flowers\u003c\/strong\u003e - left for the teacher overnight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLove Songs\u003c\/strong\u003e - somebody is singing love songs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMystery Bouquet\u003c\/strong\u003e - flowers with the label torn off\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive case files, each with a crime sheet and its own lineup of suspects\u003c\/li\u003e\n  \u003cli\u003eFour digit subtraction with regrouping on every page\u003c\/li\u003e\n  \u003cli\u003eBorrowing across four columns, which is the hardest subtraction at this level\u003c\/li\u003e\n  \u003cli\u003eEach answer matches one suspect and no other, so the page checks itself\u003c\/li\u003e\n  \u003cli\u003eA full answer key for every case\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective is a single page case your class cracks with math. The suspects stand in a lineup with a number each, the crime sheet produces those numbers, and a correct answer knocks one suspect out until the last name standing is the culprit. There is no kit and nothing to assemble, so what carries it is the arithmetic, which is what makes detective activities land where math worksheets slide off. One case runs a class period.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFour digit borrowing needs far more repetitions than the unit allows, and these five cases supply them in a form third and fourth graders will finish. February gives you a reason to hand it out, and it still works in April when you want the columns automatic before decimals arrive. One wrong borrow names the wrong suspect, so students trace the error back themselves.\u003c\/p\u003e\n\n\u003cp\u003eIt suits test prep, homework, math centers, morning work, early finishers, sub plans, homeschool lessons and spiral review, with a class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 3rd grade and 4th grade, where four digit subtraction sits in the standards. Fifth graders use it as a fluency refresher, and second graders take it once three digit borrowing is secure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive full pages on the hardest subtraction third graders meet\u003c\/li\u003e\n  \u003cli\u003eStudents trace a wrong borrow back when the wrong name comes off\u003c\/li\u003e\n  \u003cli\u003eNo prep, and the answer keys make grading quick\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners, or one student alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955456237938,"sku":"5148796","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/valentines-day-4-digit-subtraction-with-regrouping-worksheets-5148796.jpg?v=1792461132"},{"product_id":"box-method-multiplication-2-digit-by-2-digit-mystery-detective-worksheets-grades-4-6-monster-theme","title":"Box Method Multiplication (2-Digit by 2-Digit) | Mystery Detective Worksheets | Grades 4–6 | Monster Theme","description":"\u003cp\u003eAre you looking for box method multiplication worksheets with multi-digit multiplication? These engaging 2x2 digit multiplication Mini Mystery Detective packs of math activities are the perfect way to practice.\u003c\/p\u003e\n\n\u003cp\u003eThe Multiplication Mystery Detectives are designed to be done in one class period. This pack contains five box-method multiplication Mysteries. At the top of each page is a story to set the scene. Students then answer six questions to narrow down the suspects and options until they have solved these daily math questions.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThese Box Method Multiplication Mystery Detectives\u003c\/strong\u003e are based on monsters and aliens, and students must find the monster among us.\u003c\/p\u003e\n\n\u003cp\u003eThese box method multiplication worksheets provide an opportunity to practice math and problem-solving skills in a more practical context. The high-interest topics in these mysteries are highly motivating for this age group and will capture their imagination.\u003c\/p\u003e\n\n\u003cp\u003eThese Mystery Detectives are designed for 3rd-grade, 4th-grade, and 5th-grade students. They could also be used with struggling 6th-grade students who need a little extra work and reinforcement in multiplication problems. I also leave some of the mysteries for my sub teacher.\u003c\/p\u003e\n\n\u003cp\u003eMystery Detectives are an independent escape room (or crack the code) activity where students identify suspects using puzzles, word problems, and games instead of locks.\u003c\/p\u003e\n\n\u003cp\u003eEnjoy these box method multiplication math worksheets and activities. Remember to follow me by clicking the following link to find my latest resources and receive discounts.\u003c\/p\u003e\n\n\u003cp\u003eThank you\u003c\/p\u003e\n\n\u003cp\u003eKiwiland\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBox Method Multiplication and Division Mystery Detectives:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e3x1 Digit Box Method Multiplication Mystery Detectives\u003c\/li\u003e\n  \u003cli\u003e2x2 Digit Box Method Multiplication Mystery Detectives\u003c\/li\u003e\n  \u003cli\u003e3 Digit Box Method Division Mystery Detectives\u003c\/li\u003e\n  \u003cli\u003e4 Digit Box Method Division Mystery Detectives\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eOr as a Bundle:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eBox Method Multiplication and Division Bundle\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more Mini Mystery Detective packs, no-prep math activities, and detective-themed stories for the classroom.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955467805042,"sku":"12562314","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/box-method-multiplication-2x2-digit-worksheets-grade-4-5-12562314.jpg?v=1792461264"},{"product_id":"box-method-multiplication-3-digit-by-1-digit-mystery-detective-worksheets-grades-4-6-monster-theme","title":"Box Method Multiplication (3-Digit by 1-Digit) | Mystery Detective Worksheets | Grades 4–6 | Monster Theme","description":"\u003cp\u003eAre you looking for multi-digit multiplication math activities using the box method? These engaging 3x1 digit multiplication Mini Mystery Detective worksheets are the perfect way to practice.\u003c\/p\u003e\n\n\u003cp\u003eThe Mystery Detectives are designed to be done in one class period. This pack contains five box-method Mysteries. At the top of each page is a story to set the scene. Students then answer six questions to narrow down the suspects and options until they have solved these daily math questions.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThese Box Method Mystery Detectives\u003c\/strong\u003e are based on monsters and aliens, and students must find the monster among us.\u003c\/p\u003e\n\n\u003cp\u003eThese box method multiplication worksheets provide an opportunity to practice math and problem-solving skills in a more practical context. The high-interest topics in these mysteries are highly motivating for this age group and will capture their imagination.\u003c\/p\u003e\n\n\u003cp\u003eThese Mystery Detectives are designed for 3rd-grade, 4th-grade, and 5th-grade students. They could also be used with struggling 6th-grade students who need a little extra work and reinforcement in multiplication problems. I also leave some of the mysteries for my sub-teacher.\u003c\/p\u003e\n\n\u003cp\u003eMystery Detectives are an independent escape room (or crack the code) activity where students identify suspects using puzzles, word problems, and games instead of locks.\u003c\/p\u003e\n\n\u003cp\u003eEnjoy these box method multiplication math worksheets and activities. Remember to follow me by clicking the following link to find my latest resources and receive discounts.\u003c\/p\u003e\n\n\u003cp\u003eThank you\u003c\/p\u003e\n\n\u003cp\u003eKiwiland\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBox Method Multiplication and Division Mystery Detectives:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e3x1 Digit Box Method Multiplication Mystery Detectives\u003c\/li\u003e\n  \u003cli\u003e2x2 Digit Box Method Multiplication Mystery Detectives\u003c\/li\u003e\n  \u003cli\u003e3 Digit Box Method Division Mystery Detectives\u003c\/li\u003e\n  \u003cli\u003e4 Digit Box Method Division Mystery Detectives\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eOr as a Bundle:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eBox Method Multiplication and Division Bundle\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more Mini Mystery Detective packs, no-prep math activities, and detective-themed stories for the classroom.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955475439986,"sku":"12566468","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/box-method-multiplication-3-digit-by-1-worksheets-grade-4-5-12566468.jpg?v=1792461264"},{"product_id":"4-digit-addition-with-regrouping-mystery-detective-worksheets-grades-2-5-winter-theme","title":"4-Digit Addition with Regrouping | Mystery Detective Worksheets | Grades 2–5 | Winter Theme","description":"\u003cp\u003eWinter snow day 4 digit addition with regrouping math activities for 3rd grade and 4th grade: five math cases, each a Mystery Detective page with carrying across four columns. January and February math worksheets with full answer keys, no prep, print and go, for math centers, early finishers, homework, morning work and sub plans. A snowman built overnight, an empty seat and a surprise ski trip carry the cases, every total matches one suspect only and crosses them off the lineup, and a CSI Mini Mystery Detective is the page a class will finish in the dead of winter.\u003c\/p\u003e\n\n\u003cp\u003eThe long stretch after the holidays is when a lesson needs to run itself, and four digit addition with a culprit at the end of it does. Students add, find the suspect with that total and cross the name off, so every page is self-marking, and one CSI Mini Mystery Detective math case a day carries the class through a slow January week.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurprise Snowman\u003c\/strong\u003e - built overnight by somebody\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWinter Blues\u003c\/strong\u003e - one seat is empty today\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSkiing and Snowboarding\u003c\/strong\u003e - somebody is off on a surprise trip\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMittens and Gloves\u003c\/strong\u003e - one mitten short on a cold day\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eToboggan Turn\u003c\/strong\u003e - who gets the next run\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive case files, each with a crime sheet and its own lineup of suspects\u003c\/li\u003e\n  \u003cli\u003eFour digit addition with regrouping on every page\u003c\/li\u003e\n  \u003cli\u003eCarrying across four columns, so students cannot rely on three digit habits\u003c\/li\u003e\n  \u003cli\u003eEach answer matches one suspect and no other, so the page checks itself\u003c\/li\u003e\n  \u003cli\u003eA full answer key for every case\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective is one page, one crime and one class period. Each suspect in the lineup is tagged with a number, the questions produce those numbers, and a correct answer knocks a suspect out until the last one standing is the culprit. Nothing needs cutting, laminating or charging, which is why these detective activities get handed out on days that would otherwise call for math worksheets.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eJanuary and February is the stretch this was written for, when the class is back from the break and three digit addition needs pushing on to four. The extra column catches students who have been adding on autopilot, and five cases give you enough practice for the habit to change. A carry missed in the thousands names the wrong suspect, so they go back over the whole sum.\u003c\/p\u003e\n\n\u003cp\u003eUse it for test prep, homework, math centers, morning work, early finishers, sub plans and homeschool lessons, with a class, a small group or one student alone.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 3rd grade and 4th grade, where four digit addition sits in the standards. Fifth graders take it as a fluency check, and second graders manage it once three digit carrying is secure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFour columns, which catches students adding on autopilot\u003c\/li\u003e\n  \u003cli\u003eStudents recheck the whole sum when the wrong suspect comes off\u003c\/li\u003e\n  \u003cli\u003eNo prep in the long stretch after the holidays\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners, or one student alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955550118258,"sku":"5132259","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/winter-4-digit-addition-with-regrouping-worksheets-5132259.jpg?v=1792460958"},{"product_id":"4-digit-addition-with-regrouping-mystery-detective-worksheets-grades-2-5-new-year-theme","title":"4-Digit Addition with Regrouping | Mystery Detective Worksheets | Grades 2–5 | New Year Theme","description":"\u003cp\u003eNew Year math worksheets for 2nd grade, 3rd grade and 4th grade: five January cases of 4 digit addition with regrouping, each a CSI Mini Mystery Detective math page. Print and go, full answer keys: no prep math centers, morning work, early finishers, homework and sub plans for the first weeks back. A party popper nobody saw, a secret gift and a countdown heard in an empty room carry the theme, each total crosses a suspect off the lineup until the culprit is left, and carrying across four columns is what gets students there.\u003c\/p\u003e\n\n\u003cp\u003eThe first week of January needs something with a bit of pull, and a New Year party with an invitation for the detective has more pull than a page of sums. Students add, find the suspect with that total and cross the name off, so the class settles into the year without you at the front. All five CSI Mini Mystery Detective math pages are self-marking.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParty Popper\u003c\/strong\u003e - a party popper goes off unseen\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNew Year Gift\u003c\/strong\u003e - a secret gift on the desk\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuld Lang Syne\u003c\/strong\u003e - someone singing where nobody was looking\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNew Year Countdown\u003c\/strong\u003e - a countdown heard with nobody there\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNew Year Party\u003c\/strong\u003e - an invitation left for the detective\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive case sheets in color, each with its own lineup of suspects\u003c\/li\u003e\n  \u003cli\u003eThe same five cases in black and white for cheaper printing\u003c\/li\u003e\n  \u003cli\u003e4 digit addition with regrouping, 16 questions on every sheet\u003c\/li\u003e\n  \u003cli\u003eEvery answer matches one suspect and no other, so the page checks itself\u003c\/li\u003e\n  \u003cli\u003eA full answer key for all five cases\u003c\/li\u003e\n  \u003cli\u003eA teacher instruction page and a color in page for early finishers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective is a printed case with a lineup of suspects, each carrying a number. The questions on the crime sheet produce those numbers, a correct answer strikes one suspect off, and the last name standing is the culprit. The elimination only works when the math is right, which is what makes these detective activities catch slips that a page of math worksheets would let through. One case fits one class period, with nothing to prepare.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBring this out in the first week back in January, when the class needs something to settle into and the addition unit picks up where it left off. Four digit addition with regrouping is a skill that wants repetition, and five separate cases give you that without five identical pages. Because a wrong total takes the wrong name off the lineup, students find their own slips before you ever see the sheet.\u003c\/p\u003e\n\n\u003cp\u003eIt covers test prep, homework, math centers, morning work, early finishers, sub plans and homeschool lessons, with a whole class, a small group or one student on their own.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 2nd grade, 3rd grade and 4th grade, where multi digit addition with regrouping sits in the standards. Fifth graders take it as a quick refresher before larger numbers, and it works as an extension for a confident 1st grader.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFour digit totals, big enough to need regrouping on nearly every question\u003c\/li\u003e\n  \u003cli\u003eStudents check themselves, because the wrong total takes off the wrong name\u003c\/li\u003e\n  \u003cli\u003ePrint and go, and the answer keys make grading quick\u003c\/li\u003e\n  \u003cli\u003eColor and black and white versions of every case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955550314866,"sku":"5133547","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/new-years-4-digit-addition-with-regrouping-worksheets-5133547.jpg?v=1792460958"},{"product_id":"2-digit-by-2-digit-multiplication-mystery-detective-worksheets-grades-4-6-christmas-theme","title":"2-Digit by 2-Digit Multiplication | Mystery Detective Worksheets | Grades 4–6 | Christmas Theme","description":"\u003cp\u003eFive Christmas math cases, each a Mystery Detective page of 2 digit by 2 digit long multiplication for 4th grade and 5th grade, where every product crosses a classmate, a person or a place off the clue list. The whole school's presents have gone, somebody ate the gingerbread and a parcel on the teacher's desk has no explanation, and the multiplication is the only way to the culprit. Print and go with full answer keys: no prep December math worksheets and Mystery Detective cases for morning work, math centers, early finishers, homework and sub plans.\u003c\/p\u003e\n\n\u003cp\u003eLong multiplication in the last fortnight of term is a hard ask, and a missing pile of Christmas presents is what makes it happen. Each product has to land on a clue, so a slipped carry shows up on the page before it shows up in your marking, and one case a day covers the fortnight. Each CSI Mini Mystery Detective math page is marked in a minute with the key.\u003c\/p\u003e\n\u003cp\u003eThe school's Christmas presents have gone missing, someone has eaten the gingerbread, and nobody knows who the Secret Santa is. Students work each product with partial products, then cross off the matching name or place on the clue list. They can see for themselves whether their working was right.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMissing Xmas Presents\u003c\/strong\u003e - where the school presents are\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWho Ate The Gingerbread\u003c\/strong\u003e - which classmate ate it\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecret Santa\u003c\/strong\u003e - who the Secret Santa is\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTeachers Xmas Present\u003c\/strong\u003e - what's in the teacher's present\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChristmas Fruitcake\u003c\/strong\u003e - who baked the Christmas cake\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFive Christmas case pages\u003c\/li\u003e\n  \u003cli\u003e2 digit by 2 digit multiplication on every page\u003c\/li\u003e\n  \u003cli\u003eA clue list on each page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for all five\u003c\/li\u003e\n  \u003cli\u003eTeacher instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA CSI Mini Mystery Detective is one page with a Christmas story, a set of problems and a clue list. Every clue on the list has a number next to it. Students cross off clues as their answers match, and the clue that's left solves the case.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUse these in the weeks before winter break. The multiplication isn't seasonal, so they can also come out later as long multiplication review. They work as morning work, for a class party day, as homework or on a sub day.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWritten for 4th grade and 5th grade.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eA Christmas theme your class will enjoy\u003c\/li\u003e\n  \u003cli\u003eLong multiplication practice in December\u003c\/li\u003e\n  \u003cli\u003eNo prep\u003c\/li\u003e\n  \u003cli\u003eFive separate cases\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWant more cases like these?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955566076274,"sku":"8803539","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/christmas-2x2-digit-multiplication-worksheets-4th-5th-grade-8803539.jpg?v=1792462230"},{"product_id":"2-digit-by-1-digit-multiplication-mystery-detective-worksheets-grades-3-5-christmas-theme","title":"2-Digit by 1-Digit Multiplication | Mystery Detective Worksheets | Grades 3–5 | Christmas Theme","description":"\u003cp\u003eChristmas math worksheets for 3rd grade and 4th grade: five Mystery Detective math cases of 2 digit by 1 digit multiplication, where each product crosses a classmate, a person or a place off the clue list beside the sums. Missing decorations, a cookie somebody got to first and a candy cane left for the teacher carry December, and the multiplication underneath is the fluency check a class needs before the break. Print and go with full answer keys, no prep: December math centers, morning work, early finishers, homework and sub plans from one CSI Mini Mystery Detective math download.\u003c\/p\u003e\n\n\u003cp\u003eSomebody has eaten the Christmas cookie and nobody is owning up, which is enough to get a third grade class through a page of multiplication in the week they are least inclined to do it. A wrong product matches no clue, so students check their work before they cross anything off, and the answer keys make five pages a quick mark. Five math cases, one Mystery Detective file.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMissing Xmas Decorations\u003c\/strong\u003e - a teacher cannot find them\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWho Ate The Xmas Cookie\u003c\/strong\u003e - a classmate got there first\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecret Santa\u003c\/strong\u003e - a gift and no name\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCandy Cane\u003c\/strong\u003e - somebody left one for the teacher\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChristmas Turkey\u003c\/strong\u003e - who is carving it this year\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive Christmas cases, each a page of 2 digit by 1 digit multiplication\u003c\/li\u003e\n  \u003cli\u003eA clue list down the side of each page, so one product removes one name\u003c\/li\u003e\n  \u003cli\u003eA red-ink answer key for all five cases\u003c\/li\u003e\n  \u003cli\u003eFive separate Christmas stories, so the theme carries the fortnight\u003c\/li\u003e\n  \u003cli\u003eSized for one class period a case\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective is a single printed page with a crime at the top and a short clue list beside the questions. Every clue carries a number, the questions produce those numbers, and a match strikes that clue out. The clue nobody matched is the answer. Nothing is cut, laminated or charged, so the arithmetic does the whole job.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDecember is the month a lesson has to hold a class on its own, and these five cases were built for exactly that fortnight. They also suit the day of a class party and the afternoon after a Christmas assembly, when the timetable has already gone. Because the whole task is printed on the page, they make a safe sub folder resource in the busiest weeks of the year.\u003c\/p\u003e\n\n\u003cp\u003eUse it for morning work, math centers, early finishers, homework, class parties, sub plans and homeschool lessons, with a whole class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 3rd grade and 4th grade. Third graders use these once the times tables are secure, and fourth graders use them as a December warm up before two digit by two digit work.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eHolds a class in the last fortnight of term, which is the hard part\u003c\/li\u003e\n  \u003cli\u003eNo preparation in the month that has none to spare\u003c\/li\u003e\n  \u003cli\u003eFive cases covers the whole run up to the break\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners or one student\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955566141810,"sku":"8807785","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/christmas-2x1-digit-multiplication-worksheets-3rd-4th-grade-8807785.jpg?v=1792460402"},{"product_id":"2-digit-by-2-digit-multiplication-mystery-detective-worksheets-grades-4-6-thanksgiving-theme","title":"2-Digit by 2-Digit Multiplication | Mystery Detective Worksheets | Grades 4–6 | Thanksgiving Theme","description":"\u003cp\u003eFive one page CSI Mini Mystery Detective math cases on 2 digit by 2 digit multiplication, 4th grade and 5th grade, set at Thanksgiving. Students work each multiplication on the crime sheet, then use the product to cross a suspect off the lineup until one name is left, so multi digit multiplication arrives as math worksheets and math activities in one no prep download. Turkey math and Thanksgiving math for November, then test prep, math centers, early finishers, homework, morning work, sub plans and spiral review. CSI math with detective activities and full answer keys, print and go.\u003c\/p\u003e\n\n\u003cp\u003eHand this out and a class gets straight on with it, which is not the usual reaction to long multiplication. Each product matches one suspect and takes that name off the lineup, so students work through the whole page for their own reasons. One case fills a period, so the five make a tidy week of test prep with keys included.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWho is left the lunch for the teachers?\u003c\/strong\u003e - somebody baked for the staffroom\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWho took the acorns?\u003c\/strong\u003e - the squirrel's store is empty\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eA huge pumpkin at school\u003c\/strong\u003e - nobody knows who brought it in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhere is the turkey?\u003c\/strong\u003e - the turkey has gone missing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWho swept the leaves up?\u003c\/strong\u003e - the yard is suddenly spotless\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive case files, each with a crime sheet and its own lineup of suspects\u003c\/li\u003e\n  \u003cli\u003e2 digit by 2 digit multiplication on every page\u003c\/li\u003e\n  \u003cli\u003eSpace on the sheet for both partial products to be written out\u003c\/li\u003e\n  \u003cli\u003eEach answer matches one suspect and no other, so the page checks itself\u003c\/li\u003e\n  \u003cli\u003eA full answer key for every case\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective puts a crime, a lineup and a page of math in front of your class, and the only way to name the culprit is to get the math right. Each suspect carries a number, each solved question matches one of them, and that suspect is crossed off until a single name remains. Because a wrong product eliminates the wrong person, these detective activities make students check their work in a way math worksheets cannot. One case fills a class period.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eLong multiplication usually lands in the fall, which puts the practice right in the middle of the Thanksgiving run up when a plain worksheet has no chance. Students lose the answer by forgetting the placeholder zero on the second row, and that error is invisible until it is graded. Here it crosses off the wrong suspect, so the class finds it and re-checks the layout without being told.\u003c\/p\u003e\n\n\u003cp\u003eIt suits test prep, homework, math centers, morning work, early finishers, sub plans and homeschool lessons, with a whole class, a small group or one student alone.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 4th grade and 5th grade, where 2 digit by 2 digit multiplication sits in the standards. Third graders take it once they are fluent with facts to twelve, and 6th graders use it as a warm up before multiplying decimals.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCatches the missing placeholder zero, which is the classic long multiplication slip\u003c\/li\u003e\n  \u003cli\u003eStudents correct themselves when the wrong suspect comes off the lineup\u003c\/li\u003e\n  \u003cli\u003eNo prep in the week before the break\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners, or one student alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955615228274,"sku":"7400698","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/thanksgiving-2-digit-by-2-digit-multiplication-worksheets-7400698.jpg?v=1792460556"},{"product_id":"2-digit-by-1-digit-multiplication-mystery-detective-worksheets-grades-3-5-thanksgiving-theme","title":"2-Digit by 1-Digit Multiplication | Mystery Detective Worksheets | Grades 3–5 | Thanksgiving Theme","description":"\u003cp\u003eNovember math worksheets for 3rd grade and 4th grade, on 2 digit by 1 digit multiplication, with a Thanksgiving case on every page. Students work each multiplication on the crime sheet, then use the product to cross a suspect off the lineup until one name is left, so multiplication practice arrives as math activities students want to finish. Five Thanksgiving CSI Mini Mystery Detective math case files, useful again for test prep, math centers, early finishers, homework, morning work, sub plans and spiral review. Thanksgiving math worksheets with detective activities and full answer keys, print and go.\u003c\/p\u003e\n\n\u003cp\u003ePut one of these in front of a class in Thanksgiving week and they start straight away. The multiplication is the route to the culprit, so students work the problems for their own reasons and cross names off as they go. One case suits a whole class period, which makes the five of them a tidy week of math centers with no prep at your end.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Pumpkin Pie Recipe\u003c\/strong\u003e - the prize recipe vanishes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe School Pumpkin\u003c\/strong\u003e - it appeared on the desk overnight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Missing Turkey\u003c\/strong\u003e - the turkey has gone missing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWho Is Carving the Turkey\u003c\/strong\u003e - nobody will pick up the knife\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThankful Teacher\u003c\/strong\u003e - somebody has been helping all term\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive case files, each with a crime sheet and its own lineup of suspects\u003c\/li\u003e\n  \u003cli\u003e2 digit by 1 digit multiplication on every page\u003c\/li\u003e\n  \u003cli\u003eA Thanksgiving setting throughout: pies, pumpkins and one missing turkey\u003c\/li\u003e\n  \u003cli\u003eEach answer matches one suspect and no other, so the page checks itself\u003c\/li\u003e\n  \u003cli\u003eA full answer key for every case\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective is one printed page holding one crime and one lineup. Every suspect carries a number, the questions on the crime sheet produce those numbers, and a correct answer takes that suspect out until a single name is left. Nothing is cut, laminated or charged, so the arithmetic does all the work, and that is what separates these detective activities from ordinary math worksheets. A case fits one class period.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe two weeks before the Thanksgiving break are what this was built for, when attention is gone and the multiplication unit still has to happen. It also stands on its own as fluency practice any time after you teach multiplying by a single digit. Because each product crosses off one suspect, a careless answer shows itself straight away and students correct it before the page is handed in.\u003c\/p\u003e\n\n\u003cp\u003eUse it for test prep, homework, math centers, morning work, early finishers, sub plans and homeschool lessons, with a whole class, a small group or a single student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 3rd grade and 4th grade, where multiplying by a single digit sits in the standards. Fifth graders take it as a November fluency check, and second graders manage it once their facts to twelve are secure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSingle digit multipliers, so the season is the treat and not the difficulty\u003c\/li\u003e\n  \u003cli\u003eStudents see their own errors when the wrong suspect gets crossed off\u003c\/li\u003e\n  \u003cli\u003eZero prep in the busiest week of November\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners, or one student alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955618177394,"sku":"10430323","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/thanksgiving-math-2-digit-by-1-digit-multiplication-worksheets-csi-10430323.jpg?v=1792460403"},{"product_id":"long-division-4-digit-no-remainders-mystery-detective-worksheets-grades-4-6-printable-detective-pack","title":"Long Division (4-Digit, No Remainders) | Mystery Detective Worksheets | Grades 4–6 | Printable Detective Pack","description":"\u003cp\u003eLong division worksheets for 4th grade and 5th grade, with 4 digit dividends, single digit divisors and no remainders, so every quotient lands on a suspect exactly. Five CSI Mini Mystery Detective math cases where students work each division and cross a name off the lineup until the culprit is left, which makes the set self-checking math activities for the division unit. No prep, print and go, full answer keys, for math centers, early finishers, homework, morning work, test prep and sub plans, any month of the year.\u003c\/p\u003e\n\n\u003cp\u003eLong division is the topic that rewards getting all the way down the page, and a CSI Mini Mystery Detective math case file is the reason students do, because the culprit is on the last question. Each quotient matches one name, so the page is self-marking, and the answer key behind every sheet is a quick glance for you.\u003c\/p\u003e\n\u003cp\u003eEach case has its own villain lineup, with names like Painting Pirate, Dewey Demon and Heist Master. Students divide, find the suspect whose number matches the quotient, and cross that suspect off. If a step goes wrong, the quotient won't be on the list, which sends them back to check their working.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Art Gallery Theft\u003c\/strong\u003e - a prize painting goes missing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChampionship Soccer Ball\u003c\/strong\u003e - stolen before the big game\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRare Book Disappearance\u003c\/strong\u003e - the library's last copy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExperimental Lab\u003c\/strong\u003e - a science lab sabotaged\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Bank Vault\u003c\/strong\u003e - the bank vault broken into\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFive case pages, each with its own suspect lineup\u003c\/li\u003e\n  \u003cli\u003eLong division with 4 digit dividends and 1 digit divisors\u003c\/li\u003e\n  \u003cli\u003eNo remainders\u003c\/li\u003e\n  \u003cli\u003eAn answer key for every case\u003c\/li\u003e\n  \u003cli\u003eTeacher instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEvery case is a single page. There's a crime at the top, division problems below it and a lineup of villains, each with a number. Students cross off the villain that matches each answer. The one left over did it.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis set is for the point in the division unit when the standard algorithm has been taught and students are ready to use it without help. Because every answer is exact, the focus stays on dividing, bringing down and subtracting in the right order. It also works for test prep, small groups, sub days and homeschool.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWritten for 4th grade and 5th grade. 6th graders can use it for fluency before remainders and decimal quotients.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNo remainders to deal with\u003c\/li\u003e\n  \u003cli\u003eEach case has a different crime\u003c\/li\u003e\n  \u003cli\u003eNothing to prep\u003c\/li\u003e\n  \u003cli\u003eStudents can see when a quotient is wrong\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWant more cases like these?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary and middle school classrooms.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955625353586,"sku":"9433663","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/long-division-worksheets-4-digit-dividend-no-remainders-csi-mystery-9433663.jpg?v=1792462504"},{"product_id":"2-digit-by-2-digit-multiplication-mystery-detective-worksheets-grades-4-6-winter-theme","title":"2-Digit by 2-Digit Multiplication | Mystery Detective Worksheets | Grades 4–6 | Winter Theme","description":"\u003cp\u003e2 digit by 2 digit multiplication worksheets for 4th grade and 5th grade, five winter CSI Mini Mystery Detective math cases where the product points at a suspect and the wrong product points at nobody. A snowball fight, a missing raincoat and a snowman nobody admits to building carry the theme, and the multi digit multiplication underneath is the practice a class needs in the weeks after the holidays. Snow day math activities for December, January and February, then no prep math centers, early finishers, homework and sub plans, full answer keys.\u003c\/p\u003e\n\n\u003cp\u003eLong multiplication is the topic students stop halfway through, and a winter culprit is the reason they get to the last question. Because every product has to land on a name, a slipped carry shows up on the lineup and they check it themselves. Keep one CSI Mini Mystery Detective math case back for the snow day nobody planned for, when a lesson has to run itself.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSnowball Fight\u003c\/strong\u003e - who threw the first one\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMissing Raincoat\u003c\/strong\u003e - gone on the wettest day of the year\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHot Chocolate\u003c\/strong\u003e - a hot chocolate left on the desk\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSnowman Mystery\u003c\/strong\u003e - a snowman nobody admits to building\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePresent for Teacher\u003c\/strong\u003e - a parcel nobody will open\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive case files, each with a crime sheet and its own lineup of suspects\u003c\/li\u003e\n  \u003cli\u003e2 digit by 2 digit multiplication on every page\u003c\/li\u003e\n  \u003cli\u003eRoom on the sheet for students to set the partial products out properly\u003c\/li\u003e\n  \u003cli\u003eEach answer matches one suspect and no other, so the page checks itself\u003c\/li\u003e\n  \u003cli\u003eA full answer key for every case\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective is one page, one crime and one class period. Every suspect in the lineup is tagged with a number, the questions produce those numbers, and a correct answer knocks a suspect out until the last one standing is the culprit. Nothing needs cutting, laminating or charging, which is why these detective activities get used on the days ordinary math worksheets would be handed out. It works as a lesson, in math centers, or left for a substitute.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDecember through February is the natural run, and a snow day or the week either side of a break is where this set gets used most. Two digit by two digit is the point where students stop lining the second row up properly, and that one habit costs them the whole answer. A misplaced row crosses off the wrong suspect here, so they see it and fix the layout rather than the numbers.\u003c\/p\u003e\n\n\u003cp\u003eIt suits test prep, homework, math centers, morning work, early finishers, sub plans and homeschool lessons, with a class, a small group or one student alone.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 4th grade and 5th grade, where 2 digit by 2 digit multiplication sits in the standards. Third graders take it once they are fluent with facts to twelve, and 6th graders use it as a warm up before multiplying decimals.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCatches the missing zero on the second row, which is the classic slip\u003c\/li\u003e\n  \u003cli\u003eStudents correct themselves when the wrong suspect is crossed off\u003c\/li\u003e\n  \u003cli\u003eNo prep on the day the bus is late and half the class is missing\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners, or one student alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955690365298,"sku":"8863741","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/winter-2-digit-by-2-digit-multiplication-worksheets-4th-grade-8863741.jpg?v=1792460555"},{"product_id":"2-digit-by-1-digit-multiplication-mystery-detective-worksheets-grades-3-5-summer-theme","title":"2-Digit by 1-Digit Multiplication | Mystery Detective Worksheets | Grades 3–5 | Summer Theme","description":"\u003cp\u003eEnd of year math for 3rd grade and 4th grade: five summer CSI Mini Mystery Detective math cases of 2 digit by 1 digit multiplication, each one a CSI Mini Mystery Detective where the right product clears a suspect and the wrong one clears nobody. Lifeguards, picnics, ice cream and a lemonade stand carry the theme, and the multiplication underneath is a fluency check before the year ends. After state testing activities for May and June, then math centers, early finishers, homework, sub plans and back to school review in August, no prep, full answer keys.\u003c\/p\u003e\n\n\u003cp\u003eThe last weeks of the year need resources that hold a class without any effort from you, and a summer case with a culprit at the end of it does that better than a review sheet. Students multiply, match the product to a name, cross it off and keep going, so everyone stays busy at their own pace. One CSI Mini Mystery Detective math case a day covers the week.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLifeguards Cooler\u003c\/strong\u003e - the cooler is emptied at the beach\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePicnic Basket\u003c\/strong\u003e - no basket, and the picnic is today\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGardening Tools\u003c\/strong\u003e - the caretaker's shed is emptied\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMissing Ice Cream\u003c\/strong\u003e - the truck is emptied on a hot day\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLemonade Stand\u003c\/strong\u003e - every lemon vanishes before opening\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive case files, each with a crime sheet and its own lineup of suspects\u003c\/li\u003e\n  \u003cli\u003e2 digit by 1 digit multiplication on every page\u003c\/li\u003e\n  \u003cli\u003eProducts that need a carry, so it is more than a facts drill\u003c\/li\u003e\n  \u003cli\u003eEach answer matches one suspect and no other, so the page checks itself\u003c\/li\u003e\n  \u003cli\u003eA full answer key for every case\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective is one page, one crime and one class period. Each suspect in the lineup is tagged with a number, the questions produce those numbers, and a correct answer knocks a suspect out until the last one standing is the culprit. Nothing needs cutting, laminating or charging, which is why these detective activities get handed out on days that would otherwise call for math worksheets.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eMay and June, when testing is finished and the multiplication still has to be kept warm for next year. A class that will not start another worksheet will start a case, which is the whole point of this set at that time of year. A missed carry puts the wrong name in the frame, so students check their own work while you get on with everything the end of year demands.\u003c\/p\u003e\n\n\u003cp\u003eIt covers test prep, homework, math centers, morning work, early finishers, sub plans and homeschool lessons, with a class, a small group or one child alone.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 3rd grade and 4th grade, where multiplying by a single digit sits in the standards. Fifth graders take it as an end of year fluency check, and second graders manage it once their facts to twelve are secure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eKeeps multiplication warm in the weeks after testing\u003c\/li\u003e\n  \u003cli\u003eStudents check themselves when the wrong suspect comes off the lineup\u003c\/li\u003e\n  \u003cli\u003eNo prep at the end of the year\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners, or one student alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955696198002,"sku":"9538454","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/summer-math-2-digit-by-1-digit-multiplication-worksheets-csi-mystery-9538454.jpg?v=1792460403"},{"product_id":"4-digit-addition-with-regrouping-mystery-detective-worksheets-grades-2-5-robot-theme","title":"4-Digit Addition with Regrouping | Mystery Detective Worksheets | Grades 2–5 | Robot Theme","description":"\u003cp\u003eRobot 4 digit addition with regrouping worksheets for 3rd grade and 4th grade, five math activities set as Mystery Detective cases, sixteen sums a page that carry more than once. No prep and print and go, full answer keys, math centers, morning work, early finishers, homework and sub plans, for any month a class needs the practice. A computer chip vanishes from the workshop, a robot goes missing overnight and a battle needs sorting out, and every correct total knocks a suspect off the list until one robot remains; a wrong total is nowhere on the page, so the slip gets caught at the desk and one CSI Mini Mystery Detective download keeps them adding to the bottom.\u003c\/p\u003e\n\n\u003cp\u003eCarrying twice in the same sum is the skill this pack builds, and the clue list rewards careful work all the way down the page. The total either appears on the list or it does not, so a student catches a slip at problem three instead of at marking time. Robot math with Mystery Detective rules, and the robots are what keep them coming back.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eComputer Chip - a part has gone from the workshop\u003c\/li\u003e\n  \u003cli\u003eMissing Robot - one of the line-up has vanished overnight\u003c\/li\u003e\n  \u003cli\u003eRobot Repairs - working out who patched up which machine\u003c\/li\u003e\n  \u003cli\u003eRobot Battle - sorting out what actually happened\u003c\/li\u003e\n  \u003cli\u003eRobot Gift - the last case, and the one with the twist\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive robot case files, sixteen addition problems on each\u003c\/li\u003e\n  \u003cli\u003eFour digit addition with regrouping throughout\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for all five cases\u003c\/li\u003e\n  \u003cli\u003eSuspect and clue lists printed beside the problems\u003c\/li\u003e\n  \u003cli\u003eA teacher instruction page - print and go, nothing to cut\u003c\/li\u003e\n  \u003cli\u003eOne download, no prep and no laminating\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eOne printed page holding one crime and the clue lists that solve it. Every clue carries a number, the sixteen sums on the page produce those numbers, and a correct total crosses a clue off. Work to the last question and a single suspect is left standing. Miss a carry and nothing matches, so the page checks itself.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eUse this once four digit addition has been taught and needs practicing until it is automatic, which is usually the middle of 3rd grade. It works just as well at the start of 4th grade as revision before multi digit multiplication asks for the same carrying. Nothing in it is seasonal, so it runs in any month. Reach for it in math centers, morning work, early finishers, homework, sub plans and homeschool lessons, with a whole class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 3rd grade and 4th grade, and useful in 5th grade for students who still need column addition firmed up before decimals arrive.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eA wrong total matches no clue, so students catch their own slips\u003c\/li\u003e\n  \u003cli\u003eRobots hold a class that has gone cold on plain worksheets\u003c\/li\u003e\n  \u003cli\u003eFive cases is a full week from one print run\u003c\/li\u003e\n  \u003cli\u003eWorks any month - nothing in it is tied to a season\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eLove this resource?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955741876594,"sku":"5319333","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/4-digit-addition-with-regrouping-worksheets-3rd-4th-grade-5319333.jpg?v=1792460958"},{"product_id":"multi-digit-multiplication-digital-escape-room-math-activity-grades-4-5","title":"Multi-Digit Multiplication Digital Escape Room | Math Activity | Grades 4–5","description":"\u003cp\u003eLock the lesson and hand over a link. This animated, self-checking digital escape room turns multi-digit multiplication into a high-stakes spy training mission your students will race to finish.\u003c\/p\u003e\u003cp\u003eNo printing, no logins, no prep — just send the private link and let your recruits multiply their way out.\u003c\/p\u003e\u003ch3\u003eQuick details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade levels:\u003c\/strong\u003e 4–5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e interactive, browser-based escape room\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResource type:\u003c\/strong\u003e no-prep digital review game\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkill focus:\u003c\/strong\u003e multi-digit multiplication using the standard algorithm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTech needed:\u003c\/strong\u003e any device with a web browser\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe mission\u003c\/h3\u003e\u003cp\u003eYour recruits are deep in spy training, and every locked vault is guarded by a multiplication problem. Multiply the multi-digit numbers correctly to reveal each code — one wrong product and the vault stays sealed.\u003c\/p\u003e\u003ch3\u003eHow the escape room works\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOpen the private link — no app, no login, no account.\u003c\/li\u003e\n\u003cli\u003eSolve each animated multiplication challenge.\u003c\/li\u003e\n\u003cli\u003eA correct answer reveals the next code; wrong answers won't unlock the door.\u003c\/li\u003e\n\u003cli\u003eCrack the final code to complete the training and escape.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAn interactive escape room hosted on a private site (animated, with randomized answers for replayability).\u003c\/li\u003e\n\u003cli\u003eNo Boom Cards, Google Slides, logins, or subscriptions required.\u003c\/li\u003e\n\u003cli\u003eA PDF containing the private access link to share via Google Classroom, email, or any LMS.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSkills covered\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMultiplying 2-digit by 1-digit and 2-digit by 2-digit numbers\u003c\/li\u003e\n\u003cli\u003eUsing the standard multiplication algorithm\u003c\/li\u003e\n\u003cli\u003eRegrouping during multiplication\u003c\/li\u003e\n\u003cli\u003eBuilding multiplication fluency\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBest used for\u003c\/h3\u003e\u003cp\u003eMath centers, tech time, early finishers, sub plans, homeschool, test prep, review, and distance learning.\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61961746743666,"sku":"11880701","price":3.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/multi-digit-multiplication-digital-escape-room-1.jpg?v=1782086979"},{"product_id":"multi-digit-multiplication-summer-digital-escape-room-math-activity-grades-4-5","title":"Multi-Digit Multiplication Summer Digital Escape Room | Math Activity | Grades 4–5","description":"\u003cp\u003eSend the link and let the summer math race begin. This animated, self-checking digital escape room turns multi-digit multiplication into a beach adventure your students will race to finish.\u003c\/p\u003e\u003cp\u003eNo printing, no logins, no prep — just send the private link and let your students solve their way out.\u003c\/p\u003e\u003ch3\u003eQuick details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade levels:\u003c\/strong\u003e 4–5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e interactive, browser-based escape room\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResource type:\u003c\/strong\u003e no-prep digital review game\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkill focus:\u003c\/strong\u003e multiplying multi-digit numbers using the standard algorithm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTech needed:\u003c\/strong\u003e any device with a web browser\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe mission\u003c\/h3\u003e\u003cp\u003eThe beach gates are locked and each one is guarded by a multiplication problem. Multiply the multi-digit numbers correctly to reveal each code — one wrong product and the gate stays sealed.\u003c\/p\u003e\u003ch3\u003eHow the escape room works\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOpen the private link — no app, no login, no account.\u003c\/li\u003e\n\u003cli\u003eSolve each animated challenge.\u003c\/li\u003e\n\u003cli\u003eA correct answer reveals the next code; wrong answers won't unlock the door.\u003c\/li\u003e\n\u003cli\u003eCrack the final code to complete the mission and escape.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAn interactive escape room hosted on a private site (animated, with randomized answers for replayability).\u003c\/li\u003e\n\u003cli\u003eNo Boom Cards, Google Slides, logins, or subscriptions required.\u003c\/li\u003e\n\u003cli\u003eA PDF containing the private access link to share via Google Classroom, email, or any LMS.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSkills covered\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMultiplying 2-digit by 1- and 2-digit numbers\u003c\/li\u003e\n\u003cli\u003eUsing the standard algorithm\u003c\/li\u003e\n\u003cli\u003eRegrouping during multiplication\u003c\/li\u003e\n\u003cli\u003eBuilding multiplication fluency\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBest used for\u003c\/h3\u003e\u003cp\u003eMath centers, tech time, early finishers, end-of-year and summer review, sub plans, homeschool, test prep, and distance learning.\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61962151461234,"sku":"11640764","price":3.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/summer-multi-digit-multiplication-digital-escape-room-1.jpg?v=1782102924"},{"product_id":"place-value-csi-mystery-worksheets-grades-2-6-the-three-digit-suspect","title":"Place Value CSI Mystery Worksheets | Grades 2–6 | The Three-Digit Suspect","description":"\u003cp\u003ePlace value and ordering 3 digit numbers from least to greatest are the whole job in these fall CSI math worksheets, a CSI Mystery Detective case made for October. The Suspect Number is a mystery with a twist: four digits turned up at the crime scene and nobody knows which number they made, so 3rd grade, 4th grade and 5th grade students build every number those digits allow, line the suspects up from smallest to biggest, and work out which tens and hundreds each sits between until two remain. It is a math review that feels like an investigation, not a drill. Color and black-and-white versions with answer keys, and nothing to prepare beyond printing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: The Suspect Number\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFour digits were found at the crime scene and nobody knows which number they were arranged into. Your students take the investigation through in stages: decode the first message, build every number those digits could make, put the survivors in a police line-up, then research who each one lives nearest to. By the end two numbers are left and one of them is going to break.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eA letter-and-number cipher that decodes the opening message\u003c\/li\u003e\n  \u003cli\u003eBuilding three-digit numbers from a given set of digits\u003c\/li\u003e\n  \u003cli\u003eOrdering the suspect numbers from smallest to biggest in a line-up\u003c\/li\u003e\n  \u003cli\u003eWorking out which tens and hundreds each number sits between\u003c\/li\u003e\n  \u003cli\u003eA final shading puzzle that separates the last two suspects\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIt is an investigation on paper: students do the math, and the math names the answer. Each correct step clears one candidate, and the last one standing closes the case. A CSI Mystery Detective case behaves like a math escape room with the locks taken out - no app, no props, no prep - and it is self-checking in a way math worksheets are not, because a wrong answer leaves more than one possibility alive. Use it as a whole math activity, in math centers, or as detective activities for early finishers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eThe first weeks back at school, to see what came back with them\u003c\/li\u003e\n  \u003cli\u003ePlace value and ordering review before or after a unit test\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eEnd of year review, when attention is thin and the work still has to happen\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 3rd grade, 4th grade and 5th grade. Third graders usually pair up for the line-up page; fourth and fifth graders run the investigation independently inside a lesson. It also suits 2nd grade students who are secure with three-digit numbers and want something longer.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because an early error shows up later\u003c\/li\u003e\n  \u003cli\u003ePlace value practice with a reason to be accurate\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61980801270130,"sku":"3178592","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/place-value-math-worksheets-3-digit-numbers-detective-case-cover-3178592.jpg?v=1792460004"},{"product_id":"2-digit-by-1-digit-multiplication-mystery-detective-worksheets-grades-3-6-detective-mystery","title":"2-Digit by 1-Digit Multiplication | Mystery Detective Worksheets | Grades 3–6 | Detective Mystery","description":"\u003cp\u003e2 digit by 1 digit multiplication review worksheets for 3rd grade and 4th grade, five math worksheets with the Mystery Detective lineup on every page and twenty problems each. Print and go, no prep, full answer keys and a black and white set, for math centers, morning work, early finishers, homework, sub plans and math review any week of the year. The cases are everyday school stories, so this works in any month, and it gives 3rd grade and 4th grade students the 2 digit by 1 digit multiplication practice they need once the times tables are known. Teachers use it for multiplication review before a test or as a math center that runs on its own, one CSI Mini Mystery Detective case a day.\u003c\/p\u003e\n\n\u003cp\u003eThis is the step where students meet carrying inside multiplication for the first time, and plenty of repetitions is what makes it stick. The case gives them a reason to enjoy twenty, and the lineup makes every page self-marking. It is the sister pack to the times tables 2 by 1 set, with different cases and the same Mystery Detective math.\u003c\/p\u003e\n\u003cp\u003eThis is often the first time students carry in multiplication, and each case gives them a full page of problems to practice it. The answers match numbers in the clue lists, and students cross each one off as they find it. A missed carry leads to a number that isn't there, which tells them to look again.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Missing Bike\u003c\/strong\u003e - a bike stolen from a friend\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTeacher Appreciation Mystery Gift\u003c\/strong\u003e - a gift with no name on it\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Vacation\u003c\/strong\u003e - which student is going where\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Teachers Lunch\u003c\/strong\u003e - the teacher's missing lunch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStudent Prize\u003c\/strong\u003e - a student doing good deeds\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFive case pages in color\u003c\/li\u003e\n  \u003cli\u003eAll five cases in black and white\u003c\/li\u003e\n  \u003cli\u003eAnswer keys\u003c\/li\u003e\n  \u003cli\u003e2 digit by 1 digit multiplication throughout\u003c\/li\u003e\n  \u003cli\u003eA teacher instruction page\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProblems go on the left of the page, and on the right are lists of names, places and times, each with a number. Students cross off whatever matches their answers. What's left at the end solves the case.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThese fit after the standard algorithm has been introduced, when students are ready to practice it on their own. They make good review before a test as well. Use them for morning work, give them to small groups, or keep them for a sub day.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWritten for 3rd grade, 4th grade and 5th grade. They also give 6th graders extra practice if they need it.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNothing to prep\u003c\/li\u003e\n  \u003cli\u003eColor or black and white, whichever you prefer\u003c\/li\u003e\n  \u003cli\u003eStudents check their own carrying\u003c\/li\u003e\n  \u003cli\u003eFive cases in one download\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWant more cases like these?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62005318451570,"sku":"5012936","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/2-digit-by-1-digit-multiplication-practice-worksheets-grade-3-5012936.jpg?v=1792462230"},{"product_id":"3-digit-by-1-digit-multiplication-mystery-detective-worksheets-grades-3-6-zombie","title":"3-Digit by 1-Digit Multiplication | Mystery Detective Worksheets | Grades 3–6 | Zombie","description":"\u003cp\u003eHalloween zombie math for October, with multi digit multiplication underneath it. 3 digit by 1 digit multiplication for 4th grade and 5th grade, across five zombie CSI Mini Mystery Detective math case files, where students multiply on the crime sheet and strike a suspect off the lineup until one name is left. That gives you math worksheets and math activities in one no prep download, then test prep, math centers, early finishers, homework, morning work, sub plans and spiral review for the rest of the year. No prep CSI math, with detective activities and full answer keys.\u003c\/p\u003e\n\n\u003cp\u003eThree digit by one digit multiplication, with a zombie outbreak running over the top of it. The story carries across all five cases, and each answer a student works out takes one suspect off the lineup, so they come back for the next page on their own. Good in October with the whole class, and good all year as a math center.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFind the Zombie\u003c\/strong\u003e - one of them is hiding in school\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZombie Classmate\u003c\/strong\u003e - one classmate has changed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZombie Principal\u003c\/strong\u003e - the principal has turned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZombie Attack\u003c\/strong\u003e - the school is turning one by one\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZombie Lair\u003c\/strong\u003e - a hidden lair in the school\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive case files, each with a crime sheet and its own lineup of suspects\u003c\/li\u003e\n  \u003cli\u003e3 digit by 1 digit multiplication on every page\u003c\/li\u003e\n  \u003cli\u003eProducts that need carrying more than once, so it is real multi digit practice\u003c\/li\u003e\n  \u003cli\u003eEach answer matches one suspect and no other, so the page checks itself\u003c\/li\u003e\n  \u003cli\u003eA full answer key for every case\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective is a single page case your class cracks with math. The suspects stand in a lineup with a number each, the crime sheet produces those numbers, and a correct answer knocks one suspect out until the last name standing is the culprit. There is no kit and nothing to assemble, so what carries it is the arithmetic, which is what makes detective activities land where math worksheets slide off.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eOctober is the month it sells, but the reason to keep it is that fourth graders need many more repetitions of three digit multiplication than the unit allows, and they will do these. The story pulls them from one case to the next. A carry lost in the middle of a product names the wrong suspect, so students check the whole calculation rather than the last digit.\u003c\/p\u003e\n\n\u003cp\u003eUse it for test prep, homework, math centers, morning work, early finishers, sub plans and homeschool lessons, with a whole class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 4th grade and 5th grade, where multiplying three digits by one sits in the standards. Third graders take it once their facts are fluent, and 6th graders use it as a warm up before two digit multipliers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eA story that runs across all five cases, so students keep going\u003c\/li\u003e\n  \u003cli\u003eStudents recheck the whole product when the wrong suspect comes off\u003c\/li\u003e\n  \u003cli\u003eNo prep in the week of Halloween\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners, or one student alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62005322645874,"sku":"9571816","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/3-digit-by-1-digit-multiplication-worksheets-zombie-csi-mystery-9571816.jpg?v=1792460827"},{"product_id":"2-digit-by-2-digit-multiplication-mystery-detective-worksheets-grades-4-6-detective-mystery","title":"2-Digit by 2-Digit Multiplication | Mystery Detective Worksheets | Grades 4–6 | Detective Mystery","description":"\u003cp\u003eLooking for engaging 2-digit by 2-digit multiplication activities and worksheets? This \u003cstrong\u003eMini Mystery Detective\u003c\/strong\u003e is a fun, low-prep math activity where students solve \u003cstrong\u003e2x2 digit multiplication problems\u003c\/strong\u003e to eliminate suspects and crack the case. Perfect for math centers, whole-class lessons, early finishers, enrichment, or an engaging review activity, this mystery keeps students motivated while practicing essential multiplication skills.\u003c\/p\u003e\n\n\u003cp\u003eStudents work through a series of carefully structured multiplication grids. Each correct answer helps them narrow down the suspect list until only one culprit remains. The mystery format encourages accuracy, perseverance, and problem-solving while reinforcing multiplication strategies.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Are Mystery Detectives?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eMystery Detectives are interactive math activities that combine computation with deduction. Students solve math problems and use their answers to eliminate choices until the mystery is solved. These activities are designed to be engaging, easy to implement, and suitable for independent work, partner work, or small groups within a single class period.\u003c\/p\u003e\n\n\u003cp\u003eThis resource includes 5 different Mystery Detectives focused on 2-digit by 2-digit multiplication. Complete answer keys are included for all mysteries to support quick and easy checking.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSkills Covered\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e2-digit by 2-digit multiplication\u003c\/li\u003e\n  \u003cli\u003eMultiplication with regrouping\u003c\/li\u003e\n  \u003cli\u003eProblem solving and logical reasoning\u003c\/li\u003e\n  \u003cli\u003eAccuracy and mathematical reasoning\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMore engaging than traditional multiplication worksheets\u003c\/li\u003e\n  \u003cli\u003eEncourages careful work and self-checking\u003c\/li\u003e\n  \u003cli\u003eEasy to use in centers, small groups, or independently\u003c\/li\u003e\n  \u003cli\u003eSuitable for review, enrichment, or fast finishers\u003c\/li\u003e\n  \u003cli\u003eLow-prep and print-ready\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eSuggested Uses\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMath centers and rotations\u003c\/li\u003e\n  \u003cli\u003eWhole-class practice\u003c\/li\u003e\n  \u003cli\u003eSmall-group instruction\u003c\/li\u003e\n  \u003cli\u003eEarly finisher activities\u003c\/li\u003e\n  \u003cli\u003eReview before assessments\u003c\/li\u003e\n  \u003cli\u003eHomeschool worksheets and activities\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eLove this resource?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to explore more Mystery Detectives and receive updates, discounts, and new classroom resources.\u003c\/p\u003e\n\n\u003cp\u003eThank you\u003c\/p\u003e\n\n\u003cp\u003eKiwiland Education\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62005327790450,"sku":"15414943","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/2-digit-by-2-digit-multiplication-worksheets-grades-4-5-15414943.jpg?v=1792460555"},{"product_id":"2-digit-by-1-digit-multiplication-times-tables-mini-mystery-worksheets-grades-3-5-detective","title":"2-Digit by 1-Digit Multiplication Times Tables | Mini Mystery Worksheets | Grades 3–5 | Detective","description":"\u003cp\u003eTimes tables 2 digit by 1 digit multiplication worksheets for 3rd grade, 4th grade and 5th grade, a math game of five Mystery Detective cases with twenty products a page. No prep, print and go, full answer keys and a black and white set, for math centers, morning work, early finishers, homework, sub plans and times tables practice in any month. The teacher's lunch and then the apple off the desk go missing, the timetable gets changed and a new teacher nobody can place arrives, and every correct product crosses a suspect off until one is left; a carrying slip lands on no clue, so students go back over their own working, and one CSI Mini Mystery Detective download covers a week of the multiplication unit.\u003c\/p\u003e\n\n\u003cp\u003eMulti digit multiplication needs repetition, and a case is the pleasant way to get it, so a class happily works the extra twenty problems. Students match each product to a suspect, so they are checking their own place value as they go, and every page is self-marking. The cases are school themed, so it plays in September or May alike, with the math first and the Mystery Detective story a close second.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eThe Teachers Lunch - the lunch has gone missing\u003c\/li\u003e\n  \u003cli\u003eTeachers Apple - the apple off the desk\u003c\/li\u003e\n  \u003cli\u003eSurprise Activity - who changed the timetable\u003c\/li\u003e\n  \u003cli\u003eThe New Teacher - working out who is who\u003c\/li\u003e\n  \u003cli\u003eThe Missing Book - the last case of the set\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive color case pages, a full set of multiplication problems on each\u003c\/li\u003e\n  \u003cli\u003eThe same five cases again in black and white\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for all five cases\u003c\/li\u003e\n  \u003cli\u003eA teacher instruction page, print and go with nothing to prepare\u003c\/li\u003e\n  \u003cli\u003eTwo digit by one digit multiplication throughout\u003c\/li\u003e\n  \u003cli\u003eTimes tables practice built into every case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eOne printed page holding one crime and the clue list that solves it. Each clue carries a number, the problems on the page produce those numbers, and a correct answer knocks a clue out. Work to the last question and a single suspect is left standing. Get one wrong and nothing matches, which sends a student back over their working before you ever see it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eReach for this once the standard algorithm has been taught and simply needs mileage, or as review before a test. It works as homework, as a center, and as a set to leave for a substitute. Use it for math centers, morning work, early finishers, homework, sub plans and homeschool lessons, with a whole class, a small group or one student, at any point in the year.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 3rd grade, 4th grade and 5th grade. Sixth graders who still need the algorithm firmed up get real use out of it, and a strong second grader will manage the early cases with support.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eA wrong product matches no clue, so students catch their own slips\u003c\/li\u003e\n  \u003cli\u003eColor and black and white are both in the download\u003c\/li\u003e\n  \u003cli\u003eFive cases covers a full week of centers from one print run\u003c\/li\u003e\n  \u003cli\u003eWorks for a whole class, a small group, partners or one student\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eLove this resource?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no prep math activities, and detective themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62005407514994,"sku":"5076935","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/2-digit-by-1-digit-multiplication-worksheets-grade-4-5076935.jpg?v=1792460403"},{"product_id":"2-digit-by-2-digit-multiplication-zombie-mini-mystery-grades-4-6-detective-mystery","title":"2-Digit by 2-Digit Multiplication | Zombie Mini Mystery | Grades 4–6 | Detective Mystery","description":"\u003cp\u003e2 digit by 2 digit multiplication worksheets for 4th grade and 5th grade: five zombie math cases, each a Mystery Detective page. Print and go with full answer keys: no prep math activities for math centers, early finishers, homework, morning work and sub plans. The cases are set during a zombie outbreak at school, where each product strikes a classmate, a place or a cure off the clue list; a safe hideout to find, a classmate who has turned and a leader running the lot carry the story, and long multiplication is the only way through it.\u003c\/p\u003e\n\n\u003cp\u003eOctober is the obvious month for this one, and a zombie outbreak is a better reason to work through long multiplication than a worksheet heading is, but the story is not tied to Halloween and runs any week the unit lands. A wrong product matches no clue, so a slipped carry shows up on the page. Five CSI Mini Mystery Detective math cases covers the week.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinding A Safe Hideout\u003c\/strong\u003e - where is it safe to hide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZombie Classmate\u003c\/strong\u003e - one of the class has turned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMissing Friend\u003c\/strong\u003e - a friend lost in the outbreak\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZombie Leader\u003c\/strong\u003e - somebody is running them\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZombie Teacher\u003c\/strong\u003e - find the cure and change them back\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive case files, each a page of 2 digit by 2 digit multiplication\u003c\/li\u003e\n  \u003cli\u003eEvery product worked the long way, with partial products written out\u003c\/li\u003e\n  \u003cli\u003eA clue list beside the questions, so one answer removes one name\u003c\/li\u003e\n  \u003cli\u003eA red-ink answer key for all five cases\u003c\/li\u003e\n  \u003cli\u003eStory and artwork built for an older elementary class, not a young one\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective is one printed page carrying a crime and the clue list that solves it. Each clue is tagged with a number, the questions produce those numbers, and a correct answer crosses that clue off until one is left. It runs like an escape room with no locks and no app, and accurate multiplication is the only way to the answer.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis is the set for the practice half of the multi digit multiplication unit, once the class can set the algorithm out and needs the repetitions. It earns a second run before testing, since two digit by two digit is where partial products go missing. The zombie theme makes it an easy pick for October, but nothing in the math is seasonal.\u003c\/p\u003e\n\n\u003cp\u003eUse it for math centers, early finishers, homework, test prep, morning work, sub plans and homeschool lessons, with a whole class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 4th grade and 5th grade. Fourth graders meet two digit by two digit here, and fifth graders use it as a fluency check before the unit moves on to division.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eA dropped partial product matches no clue, so students go back and check\u003c\/li\u003e\n  \u003cli\u003eNothing to prepare beyond pressing print\u003c\/li\u003e\n  \u003cli\u003eFive cases makes a week of practice from one file\u003c\/li\u003e\n  \u003cli\u003eThe theme carries a class that has gone off worksheets\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62005459386738,"sku":"8727339","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/2x2-digit-multiplication-worksheets-4th-5th-grade-zombie-theme-8727339.jpg?v=1792460555"},{"product_id":"3-digit-by-1-digit-multiplication-back-to-school-mystery-detective-grades-4-5-detective-mystery","title":"3-Digit by 1-Digit Multiplication | Back to School Mystery | Grades 4–5 | Detective Mystery","description":"\u003cp\u003eAre your students learning or reviewing multi-digit multiplication for 4th and 5th grade math for back to school? Then these Mystery Detectives activities and multi-digit multiplication worksheets are perfect for your students to capture their imagination. They can be used in class, for a homework activity, or for assessment worksheets as students learn to solve multiplication and division problems. This math pack focuses on 3x1 digit multiplication.\u003c\/p\u003e\n\n\u003cp\u003eMini Mystery Detective cases are \u003cstrong\u003eengaging math activities\u003c\/strong\u003e that are designed to be done in one class period. There are 3x Mystery Detectives in this pack. At the top of each page is a story to set the scene of the mystery, students then answer math problems to narrow down the suspects and options until they have solved these daily math questions.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases Included\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eThe Teachers Lunchbox\u003c\/li\u003e\n  \u003cli\u003eThe Missing Teacher\u003c\/li\u003e\n  \u003cli\u003eThe Missing Art Supplies\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eEach Mini Mystery Detective case is an independent escape room (or crack the code) type of activity where, instead of using locks, students identify suspects with puzzles and word problems.\u003c\/p\u003e\n\n\u003cp\u003eEnjoy and please remember to follow me by clicking the following link to find my latest resources and receive discounts.\u003c\/p\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more Mystery Detective packs, no-prep math activities, and detective-themed stories for the classroom.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62005476557170,"sku":"11889603","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/3-digit-by-1-digit-multiplication-worksheets-grade-4-5-11889603.jpg?v=1792460826"},{"product_id":"4-digit-by-1-digit-multiplication-back-to-school-mystery-detective-grades-4-5-detective-mystery","title":"4-Digit by 1-Digit Multiplication | Back to School Mystery | Grades 4–5 | Detective Mystery","description":"\u003cp\u003eAre your students learning or reviewing multi-digit multiplication for 4th and 5th grade math for back to school? Then these Mini Mystery Detective activities and multi-digit multiplication worksheets are perfect for your students to capture their imagination. They can be used in class, for a homework activity, or for assessment worksheets as students learn to solve multiplication and division problems. This math pack focuses on 4x1 digit multiplication.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMini Mystery Detective cases\u003c\/strong\u003e are engaging math activities that are designed to be done in one class period. There are 3x Mystery Detectives in this pack. At the top of each page is a story to set the scene of the mystery, students then answer math problems to narrow down the suspects and options until they have solved these daily math questions.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases Included\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eThe Missing School Mascot\u003c\/li\u003e\n  \u003cli\u003eThe Missing Principal\u003c\/li\u003e\n  \u003cli\u003eThe Missing Math Books\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eEach Mini Mystery Detective case is an independent escape room (or crack the code) type of activity where, instead of using locks, students identify suspects with puzzles and word problems.\u003c\/p\u003e\n\n\u003cp\u003eEnjoy and please remember to follow me by clicking the following link to find my latest resources and receive discounts.\u003c\/p\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more Mystery Detective packs, no-prep math activities, and detective-themed stories for the classroom.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62005477540210,"sku":"11895615","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/multi-digit-multiplication-worksheets-4th-5th-grade-11895615.jpg?v=1792460957"},{"product_id":"4-digit-addition-with-regrouping-mystery-detective-worksheets-grades-3-5-easter","title":"4-Digit Addition with Regrouping | Mystery Detective Worksheets | Grades 3–5 | Easter","description":"\u003cp\u003eFive Easter cases of 4 digit addition with regrouping for 3rd grade and 4th grade, sixteen sums a page and every one carrying through the thousands. Each correct total crosses a suspect off the lineup and a wrong one crosses off nobody, which makes these math worksheets and Mystery Detective cases self-checking without any marking from you. Print and go with full answer keys: Easter math activities for March and April, then math centers, early finishers, homework, morning work and sub plans for the rest of the year.\u003c\/p\u003e\n\n\u003cp\u003eFour digit addition is the biggest carrying a third grader meets, and an unsigned Easter basket on the teacher's desk is what gets sixteen sums a page done without a fight. Because each total has to land on a name, a missed carry shows up on the lineup before it shows up in your marking. Keep one CSI Mini Mystery Detective math case back for the review week.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eThe Missing Easter Egg - an egg has been stolen and nobody saw who\u003c\/li\u003e\n  \u003cli\u003eEaster Egg Basket - a basket turns up on the teacher's desk, unsigned\u003c\/li\u003e\n  \u003cli\u003eMissing Easter Egg Basket - the Easter Bunny's own basket has gone\u003c\/li\u003e\n  \u003cli\u003eThe Easter Bunny Carrot - somebody has half eaten the carrot\u003c\/li\u003e\n  \u003cli\u003eEaster Eggs For Everyone - an egg on every desk and no name on any of them\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive case files, each a page of 4 digit addition with its own lineup of suspects\u003c\/li\u003e\n  \u003cli\u003eRegrouping through the tens, hundreds and thousands on every page\u003c\/li\u003e\n  \u003cli\u003eEach total matches one suspect only, so the page checks itself\u003c\/li\u003e\n  \u003cli\u003eFive Easter stories, so the theme carries the week\u003c\/li\u003e\n  \u003cli\u003eA full answer key for every case\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective is a one page printable investigation your class solves with math. It runs like a math escape room with no locks and no app: each correct answer rules one suspect out of the lineup until a single name is left. One case fits one class period, which suits math centers or a sub plan just as well as a lesson.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eMarch and April is where most teachers reach for these, in the week before the Easter break when a plain worksheet will not hold the room. They also keep multi digit carrying sharp long after the unit has moved on.\u003c\/p\u003e\n\n\u003cp\u003eUse it for test prep, homework, math centers, morning work, early finishers, sub plans and homeschool lessons, with a whole class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 3rd grade and 4th grade. Third graders use it once carrying through hundreds is secure and fourth graders treat it as fluency practice before the standard algorithm is tested.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eStudents spot their own mistakes when the wrong suspect is crossed off\u003c\/li\u003e\n  \u003cli\u003eZero prep in the week nobody has time to prepare\u003c\/li\u003e\n  \u003cli\u003eOne case a day covers a full week of morning work\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners or one student\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for more CSI Mini Mystery Detective cases, no-prep math activities and detective-themed printables for elementary and middle school classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62008101634418,"sku":"9336471","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/easter-4-digit-addition-with-regrouping-worksheets-3rd-4th-grade-9336471.jpg?v=1792460958"},{"product_id":"4-digit-addition-with-regrouping-mystery-detective-worksheets-grades-3-5-st-patricks-day","title":"4-Digit Addition with Regrouping | Mystery Detective Worksheets | Grades 3–5 | St Patrick's Day","description":"\u003cp\u003e4 digit addition with regrouping worksheets for 3rd grade and 4th grade: five St Patricks Day Mystery Detective math case files, carrying across four columns on every page. March math activities, no prep, full answer keys, then math centers, early finishers, homework, morning work and sub plans, print and go. The leprechaun's gold has gone, an invitation arrived unsigned and somebody is singing Irish lullabies; every total matches one suspect only and crosses them off the lineup, so a CSI Mini Mystery Detective does its own marking.\u003c\/p\u003e\n\n\u003cp\u003eCarrying across four columns in March is an easy sell with a pot of stolen gold at the end of it. Students add, match the total to a name and cross it off, and the page marks itself as they go. One CSI Mini Mystery Detective math case a day covers St Patricks week.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLeprechauns Gold\u003c\/strong\u003e - the gold is gone from the pot\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSt Patricks Invitation\u003c\/strong\u003e - an invitation with no sender\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurprise Shamrock\u003c\/strong\u003e - nobody will claim it\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSinging Irish Lullabies\u003c\/strong\u003e - a lullaby with no singer in sight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSt Patrick Spirit\u003c\/strong\u003e - good deeds all over the school\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive case files, each with a crime sheet and its own lineup of suspects\u003c\/li\u003e\n  \u003cli\u003eFour digit addition with regrouping on every page\u003c\/li\u003e\n  \u003cli\u003eCarrying across four columns, so the practice goes past three digit work\u003c\/li\u003e\n  \u003cli\u003eEach answer matches one suspect and no other, so the page checks itself\u003c\/li\u003e\n  \u003cli\u003eA full answer key for every case\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective hands your class a crime and a lineup of suspects, and the way through it is the math. Work the crime sheet, match each answer to the suspect wearing that number, cross that name off, and keep going until one suspect has not been ruled out. Because the elimination depends on the arithmetic being right, these detective activities catch errors a page of math worksheets would let through. One case takes a class period.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eUse this once three digit carrying is solid and the class is ready for the extra column, which for most rooms is late in the year. March gives you the seasonal reason to hand it out, and the skill keeps it useful long after the shamrocks come down. A carry missed in the thousands column strikes the wrong suspect, so students go back and check rather than moving on.\u003c\/p\u003e\n\n\u003cp\u003eTeachers use it for test prep, homework, math centers, morning work, early finishers, sub plans and homeschool lessons, with a class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 3rd grade and 4th grade, where four digit addition sits in the standards. Fifth graders take it as a quick refresher, and second graders manage it once three digit carrying is secure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFour columns of carrying, a real step up from three digit work\u003c\/li\u003e\n  \u003cli\u003eStudents catch a missed carry when the wrong name comes off the lineup\u003c\/li\u003e\n  \u003cli\u003eNo prep, and the answer keys make grading quick\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners, or one student alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62008104157554,"sku":"5295554","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/st-patricks-day-4-digit-addition-with-regrouping-worksheets-5295554.jpg?v=1792460958"},{"product_id":"4-digit-subtraction-with-regrouping-mystery-detective-worksheets-grades-3-5-st-patricks-day","title":"4-Digit Subtraction with Regrouping | Mystery Detective Worksheets | Grades 3–5 | St Patrick's Day","description":"\u003cp\u003e4 digit subtraction with regrouping worksheets for 3rd grade and 4th grade, five St Patricks Day math cases, each a Mystery Detective page. No prep March math activities with full answer keys, then math centers, early finishers, homework, spiral review and sub plans, print and go. A shamrock that appeared before the bell, green balloons that walked out and a pot of gold somebody found first carry the theme, borrowing across four columns is the route to the culprit, and every answer crosses a suspect off the lineup, so a CSI Mini Mystery Detective keeps a fourth grader borrowing to the last column.\u003c\/p\u003e\n\n\u003cp\u003eFour digit subtraction is a big step for a third grader in March, and a leprechaun to unmask is what gets five CSI Mini Mystery Detective math cases of it done with a grin. The lineup does the checking for them, so the marking is student-led and yours is a quick glance at the key.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShamrock Surprise\u003c\/strong\u003e - it appeared before the bell\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWho has Green Balloons\u003c\/strong\u003e - the balloons leave the classroom\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Green Cake\u003c\/strong\u003e - who baked for the staffroom\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePot of Gold at Rainbow\u003c\/strong\u003e - somebody found it first\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLeprechaun Costume\u003c\/strong\u003e - a teacher in green, but which one\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive case files, each with a crime sheet and its own lineup of suspects\u003c\/li\u003e\n  \u003cli\u003eFour digit subtraction with regrouping on every page\u003c\/li\u003e\n  \u003cli\u003eBorrowing across four columns, including through zeros\u003c\/li\u003e\n  \u003cli\u003eEach answer matches one suspect and no other, so the page checks itself\u003c\/li\u003e\n  \u003cli\u003eA full answer key for every case\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective is a single page case your class cracks with math. The suspects stand in a lineup with a number each, the crime sheet produces those numbers, and a correct answer knocks one suspect out until the last name standing is the culprit. There is no kit and nothing to assemble, so what carries it is the arithmetic, which is what makes detective activities land where math worksheets slide off. One case runs a class period.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFour digit borrowing is where a small error turns into a completely wrong answer, so it needs more practice than the unit gives it. Use this in March for the season, and again any time the class is heading towards decimal subtraction and needs the columns to be automatic. Because the wrong difference names the wrong suspect, students trace the error back to the column instead of starting again.\u003c\/p\u003e\n\n\u003cp\u003eIt suits test prep, homework, math centers, morning work, early finishers, sub plans, homeschool lessons and spiral review, with a class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 3rd grade and 4th grade, where four digit subtraction sits in the standards. Fifth graders use it as a fluency refresher before decimal subtraction, and second graders take it once three digit borrowing is secure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFour columns of borrowing, which is more than most worksheets ask for\u003c\/li\u003e\n  \u003cli\u003eStudents trace their own error back to the column that went wrong\u003c\/li\u003e\n  \u003cli\u003eNo prep, and the answer keys make grading quick\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners, or one student alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62008104518002,"sku":"5301746","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/st-patricks-day-4-digit-subtraction-with-regrouping-worksheets-5301746.jpg?v=1792461132"},{"product_id":"4-digit-addition-with-regrouping-mystery-detective-worksheets-grades-3-5-valentines-day","title":"4-Digit Addition with Regrouping | Mystery Detective Worksheets | Grades 3–5 | Valentine's Day","description":"\u003cp\u003e4 digit addition with regrouping Valentines Day math worksheets for 3rd grade and 4th grade, five Mystery Detective math cases with carrying across four columns on every page. No prep February math activities with full answer keys, for math centers, early finishers, homework, morning work and sub plans, print and go. Valentines Day math for 3rd grade and 4th grade, with 4 digit addition with regrouping on every page and a school valentine mystery holding it together. It is a full week of February math activities for math centers, morning work or homework, and every CSI Mini Mystery Detective page is self-marking.\u003c\/p\u003e\n\n\u003cp\u003eCarrying across four columns needs a full week of practice, not one page, and five CSI Mini Mystery Detective math cases with a valentine mystery in each are the week. Students add, match the total to a name and cross it off, which keeps everyone moving at their own pace, and the whole set is self-marking.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMystery Chocolates\u003c\/strong\u003e - a box and not a word from anyone\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eValentines Day Card\u003c\/strong\u003e - a card with no signature\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eValentines Day Flowers\u003c\/strong\u003e - left for the teacher overnight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLove Songs\u003c\/strong\u003e - somebody is singing love songs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShowing Mindfulness\u003c\/strong\u003e - quiet good deeds around the school\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive case files, each with a crime sheet and its own lineup of suspects\u003c\/li\u003e\n  \u003cli\u003eFour digit addition with regrouping on every page\u003c\/li\u003e\n  \u003cli\u003eCarrying across four columns, a real step up from three digit work\u003c\/li\u003e\n  \u003cli\u003eEach answer matches one suspect and no other, so the page checks itself\u003c\/li\u003e\n  \u003cli\u003eA full answer key for every case\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective is a printable case with a lineup of suspects, each carrying a number. The questions on the crime sheet produce those numbers, a correct answer strikes one suspect off, and the last name standing is the culprit. The elimination only works when the math is right, which is what makes these detective activities show up mistakes a page of math worksheets would hide. One case fits one class period.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eUse this once three digit carrying is secure and the class is ready for the extra column, which lands around February for most third grade rooms. The Valentines setting gives you the reason to hand it out that week, and the skill keeps it useful right through to testing. A carry missed in the thousands names the wrong suspect, so students check the whole sum again rather than the last digit.\u003c\/p\u003e\n\n\u003cp\u003eTeachers use it for test prep, homework, math centers, morning work, early finishers, sub plans and homeschool lessons, with a class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 3rd grade and 4th grade, where four digit addition sits in the standards. Fifth graders take it as a quick refresher, and second graders manage it once three digit carrying is secure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSteps up to four columns, which most February resources do not\u003c\/li\u003e\n  \u003cli\u003eStudents recheck the whole sum when the wrong name comes off\u003c\/li\u003e\n  \u003cli\u003eNo prep, and the answer keys make grading quick\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners, or one student alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62008107794802,"sku":"5147007","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/valentines-day-4-digit-addition-with-regrouping-worksheets-5147007.jpg?v=1792460958"},{"product_id":"4-digit-addition-with-regrouping-mystery-detective-worksheets-grades-3-5-presidents-day","title":"4-Digit Addition with Regrouping | Mystery Detective Worksheets | Grades 3–5 | Presidents Day","description":"\u003cp\u003ePresidents Day 4 digit addition with regrouping worksheets for 3rd grade and 4th grade, the bigger sister of the 2 digit pack, five math worksheets doubling as Mystery Detective cases with sixteen sums apiece. No prep, print and go, full answer keys, for math centers, morning work, early finishers, homework, test prep and sub plans across February. Lincoln's hat, a missing speech, a costume mix up, a class vote and the election day balloons run through the five cases, and carrying more than once in a sum is where a column quietly vanishes, so every total must match a clue before a suspect comes off the list, which means the CSI Mini Mystery Detective pack catches the lost column on the page and not in your marking pile.\u003c\/p\u003e\n\n\u003cp\u003eFour digit sums are where a student learns to keep every column in line, and this pack is for the class that has carrying once well in hand. Here the marking is student-led, so it happens on the page rather than at your desk. Presidents Day math in Mystery Detective style, for the class that is past two digits.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003ePresident Lincolns Hat - the hat has gone missing\u003c\/li\u003e\n  \u003cli\u003eThe Missing Speech - somebody has taken the pages\u003c\/li\u003e\n  \u003cli\u003ePresident Costume - working out who wore what\u003c\/li\u003e\n  \u003cli\u003eVoting Class President - a count that does not add up\u003c\/li\u003e\n  \u003cli\u003eMissing Balloons - the last case, on election day\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive color case files, sixteen addition problems on each\u003c\/li\u003e\n  \u003cli\u003eThe same five cases again in black and white\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for all five cases\u003c\/li\u003e\n  \u003cli\u003eA color-in page for early finishers\u003c\/li\u003e\n  \u003cli\u003eA teacher instruction page - print and go, nothing to prepare\u003c\/li\u003e\n  \u003cli\u003eFour digit addition with regrouping throughout\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eOne printed page holding one crime and the clue lists that solve it. Each clue carries a number, the sixteen sums on the page produce those numbers, and a correct total knocks a clue out. Work to the last question and a single suspect is left standing. Lose a column and nothing matches, which sends a student back over their working.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eReach for this in the weeks either side of Presidents Day, once four digit addition has been taught and simply needs keeping warm. It works as homework across the holiday week, as a February center, and as a set to leave for a substitute. Use it in math centers, for morning work, with early finishers, for homework, in sub plans and in homeschool lessons, with a whole class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 3rd grade and 4th grade, and useful in 5th grade for students who still need column addition firmed up. Second graders who are confident with three digit sums manage it with support.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eA wrong total matches no clue, so students catch their own slips\u003c\/li\u003e\n  \u003cli\u003eColor and black and white are both in the download\u003c\/li\u003e\n  \u003cli\u003eA color-in page for whoever finishes first\u003c\/li\u003e\n  \u003cli\u003eFive cases covers the whole Presidents Day week\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eLove this resource?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62008142266738,"sku":"5243981","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/presidents-day-4-digit-addition-with-regrouping-worksheets-5243981.jpg?v=1792460957"}],"url":"https:\/\/kiwilandeducation.com\/collections\/math-4-nbt.oembed","provider":"Kiwiland Education","version":"1.0","type":"link"}