{"title":"Grade 6 Math: The Number System","description":"\u003cp\u003e6th grade math worksheets and activities for the number system (Common Core 6.NS): printable mystery worksheets, CSI cases and digital escape rooms.\u003c\/p\u003e","products":[{"product_id":"adding-subtracting-integers-mystery-detective-worksheets","title":"Adding \u0026 Subtracting Integers | Mystery Detective Worksheets | Grades 6–9 | Positive \u0026 Negative Numbers","description":"\u003cp\u003eAdding and subtracting integers worksheets for 6th grade and 7th grade: five Mystery Detective integer math cases with positive and negative numbers throughout. No prep, print and go, full answer keys, for math centers, warm ups, early finishers, homework, test prep and sub plans. Adding and subtracting integers practice for 6th grade and 7th grade, positive and negative numbers throughout, with stories written for middle school. It works as a math center, a warm up, test prep or a sub plan through the integers unit, and every CSI Mini Mystery Detective page is self-marking.\u003c\/p\u003e\n\n\u003cp\u003eGetting the signs right is the whole skill with integers, and a stolen phone and a hacked account get a middle school class looking twice at every one of them. The marking is student-led, so the signs get checked on the page. Five Mystery Detective math cases from one download cover the last week of the unit.\u003c\/p\u003e\n\u003cp\u003eThe stories are written with older students in mind: a social media bully, a kidnapped teacher and a careless burglar are three of the five. Students add and subtract integers, then cross off the clue that matches each answer. A sign error gives a number that isn't on the list, and students notice that themselves.\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\u003eBox of Chocolates\u003c\/strong\u003e - an unsigned gift on the desk\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Stolen Phone\u003c\/strong\u003e - a phone taken from a friend\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSocial Media Bully\u003c\/strong\u003e - finding who runs the account\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Kidnapper\u003c\/strong\u003e - where the teacher has been taken\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBungling Burglar\u003c\/strong\u003e - a break-in at a friend's house\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 integer cases, color\u003c\/li\u003e\n  \u003cli\u003eThe five cases again in black and white\u003c\/li\u003e\n  \u003cli\u003eAn answer key for every case\u003c\/li\u003e\n  \u003cli\u003eAddition and subtraction with positive and negative numbers\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 a printed case with the problems and the clue lists on the same page. Each clue has a number. When an answer matches, that clue is out. Whatever is left at the end is the solution: who, where and when.\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 fits the second half of the integers unit, once students have used a number line and are ready to work without one. It also works as a refresher before integers show up in equations. Try it in a math center, with a small group, for test prep 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 6th grade and 7th grade. 6th graders use it at the end of the integers unit, and 7th graders use it for review.\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\u003eStories that suit middle school\u003c\/li\u003e\n  \u003cli\u003eColor and black and white versions\u003c\/li\u003e\n  \u003cli\u003eNo prep at all\u003c\/li\u003e\n  \u003cli\u003eStudents can check their signs as they go\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 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":52291304554866,"sku":"4944480","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/adding-and-subtracting-integers-worksheets-6th-7th-grade-4944480.jpg?v=1792462370"},{"product_id":"adding-subtracting-integers-csi-mystery-monster-mummies","title":"Adding \u0026 Subtracting Integers CSI Mystery Worksheets | Grades 5–9 | Monster Mummy","description":"\u003cp\u003eOctober is when adding and subtracting integers gets its best hearing in middle school, and this CSI Mystery Detective case gives grades 6, 7, 8 and 9 an ancient Egypt tomb to work it in. Positive and negative numbers, subtracting integers and adding negative numbers fill the CSI math worksheets, with answer keys for every page and color and black-and-white versions ready to print. Something in the sealed tomb is awake, and only the integers on the walls can say what. Students carry a running total along a path, color the correct arrow forward and decode two secret messages, each answer removing a suspect until the mystery has a name.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: The Monster Mummy\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eYour students are with an archaeological team that has found a sealed tomb and gone in anyway. In the first chamber there is a cup, glowing faintly, with two snakes for handles. Everything that has happened since started there. Something in this tomb is awake now, and the only way to say what it is - how tall, how fast, how bad it smells - is to work the integers on the walls.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eAdding and subtracting integers along a path where the running total settles the clue\u003c\/li\u003e\n  \u003cli\u003ePositive and negative number problems that color the correct arrow forward\u003c\/li\u003e\n  \u003cli\u003eDecoding a secret message from integer answers\u003c\/li\u003e\n  \u003cli\u003eA matching page where the line drawn passes through the letter that matters\u003c\/li\u003e\n  \u003cli\u003eA second decoding page built on adding and subtracting negative numbers\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\u003eEach page asks one question about the mummy and hands your students the integer problems that answer it. They solve, they eliminate, and the case closes when one suspect is left. Sign errors surface immediately, because a wrong sign breaks the message and the description stops making sense.\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\u003eInteger review before or after a unit test\u003c\/li\u003e\n  \u003cli\u003eAn ancient Egypt topic, alongside your history and reading work\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 grade 6 and grade 7, and it holds up for grade 8 and grade 9 students who need integer review. Sixth graders meeting negative numbers for the first time usually work it in pairs; older students run it independently and finish inside a lesson.\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 sign breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eA middle school activity that is not babyish\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":52334869676402,"sku":"6955229","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/ancient-egypt-integers-csi-mystery-detective-grades-6-9-6955229.jpg?v=1792459155"},{"product_id":"adding-subtracting-integers-csi-mystery-zombie","title":"Adding \u0026 Subtracting Integers CSI Mystery Worksheets | Grades 6–9 | Zombie Outbreak","description":"\u003cp\u003eHalloween adding and subtracting integers for middle school, grade 6, grade 7, grade 8 and grade 9, in a CSI Mystery Detective case where the zombie outbreak started at school. Positive and negative numbers identify the culprit: how fast it moves, how much it smells and how many brains it gets through come down to integers, and one zombie outside used to be someone your students knew. Math worksheets print in color or black and white with answer keys; October needs only a stapler. Students carry a running total along a path, color the correct arrow, decode secret messages from their answers and rule out suspects until one description fits and the mystery ends.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: Run Zombies Run\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe outbreak started at school. Friends, family and teachers have all gone the same way, and the survivors have barricaded themselves into what is left of the building. One of the zombies outside used to be someone your students knew. Working out which one means working the integers - how fast it moves, how much it smells, how many brains it gets through - until only one description fits.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eAdding and subtracting integers along a path where the running total settles the clue\u003c\/li\u003e\n  \u003cli\u003ePositive and negative number problems that color the correct arrow forward\u003c\/li\u003e\n  \u003cli\u003eDecoding a secret message from integer answers\u003c\/li\u003e\n  \u003cli\u003eChecking worked integer problems for errors and tallying the results\u003c\/li\u003e\n  \u003cli\u003eA second decoding page built on adding and subtracting negative numbers\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\u003eStudents are the detectives and math is the only evidence they are handed. That is the whole of a CSI Mystery Detective case: work the page, rule a suspect out with every correct answer, close the case on the last name standing. It runs as a math escape room with no locks, no app and no prep. It is also self-marking in practice, which ordinary math worksheets are not - a wrong answer produces a culprit who cannot exist. Use it as a math activity, in math centers, or as 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\u003eInteger review before or after a unit test\u003c\/li\u003e\n  \u003cli\u003eHalloween week in October, when a normal worksheet will not hold them\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 grade 6 and grade 7, and it holds up for grade 8 and grade 9 students who need integer review. Sixth graders meeting negative numbers for the first time usually work it in pairs; older students run it independently and finish inside a lesson.\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 sign breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eA middle school activity that is not babyish\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":52522822730098,"sku":"4908270","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/run-zombie-run-adding-subtracting-integers-mystery-detective-4908270.jpg?v=1792459155"},{"product_id":"dividing-decimals-mystery-detective-worksheets-grades-4-7-printable-detective-pack","title":"Dividing Decimals | Mystery Detective Worksheets | Grades 4–7 | Printable Detective Pack","description":"\u003cp\u003eDividing decimals worksheets for 5th grade and 6th grade, five CSI Mini Mystery Detective math cases where each quotient rules a suspect out until one name is left. Written to 5.NBT.7, so every page is decimal division practice that checks itself, because a misplaced decimal point lands on no suspect at all. Print and go with full answer keys: math activities for the decimals unit, then math centers, early finishers, homework, morning work, test prep and sub plans any month of the year.\u003c\/p\u003e\n\n\u003cp\u003eDecimal division is the last stop in the decimals unit and the one most likely to come up again at test time, which is why a set you can reuse matters. Students divide, match the quotient to a name and cross it off, so they catch a slipped decimal point themselves before you see it. Use one CSI Mini Mystery Detective math case with the whole class and keep four for spiral review.\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 Gem\u003c\/strong\u003e - a rare gem vanishes without trace\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMythical Potion\u003c\/strong\u003e - the recipe vanishes into thin air\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChampionship Football\u003c\/strong\u003e - the game ball taken before kickoff\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnderwater Research Station\u003c\/strong\u003e - the station has been broken into\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Bakery\u003c\/strong\u003e - the bakery loses its prize recipe\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\u003eDividing decimals on every page, written to 5.NBT.7\u003c\/li\u003e\n  \u003cli\u003eDivisors and dividends that both carry decimals, so the point has to be moved correctly\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\u003eDecimal division is the last thing in the unit and usually the part with the least practice time left, so this is the set that fills that gap. Use it once students can divide whole numbers and are learning to shift the point before they start. Getting the point in the wrong place crosses off the wrong suspect, which makes the error visible instead of it sitting quietly in a column of answers.\u003c\/p\u003e\n\n\u003cp\u003eIt carries 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 5th grade, where 5.NBT.7 sits, and used with 6th graders as fluency practice. Fourth graders take it once decimal place value is secure, and 7th graders use it as a refresher before percentages and unit rates.\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\u003eAll about moving the decimal point, which is where students come unstuck\u003c\/li\u003e\n  \u003cli\u003eStudents see the error themselves when the wrong suspect 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 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":61955117678962,"sku":"10229699","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/dividing-decimals-worksheets-5th-grade-5nbt7-csi-mini-mystery-10229699.jpg?v=1792461391"},{"product_id":"multiplying-decimals-mystery-detective-worksheets-grades-5-6-printable-detective-pack","title":"Multiplying Decimals | Mystery Detective Worksheets | Grades 5–6 | Printable Detective Pack","description":"\u003cp\u003eMultiplying decimals for 5th grade and 6th grade: five printable CSI Mini Mystery Detective math cases where students multiply on the crime sheet, match the product to a suspect and cross that name off until the culprit is left. These decimal multiplication worksheets are written to 5.NBT.7 and every answer matches exactly one suspect, so a decimal point in the wrong place shows up straight away. No prep, print and go, full answer keys: math activities for the decimals unit, math centers, early finishers, homework and sub plans, any month of the year.\u003c\/p\u003e\n\n\u003cp\u003eMost classes meet multiplying decimals twice, once in the unit and once in the weeks before testing, and five separate CSI Mini Mystery Detective math cases means you are not handing out the same page both times. The lineup does the checking, so students notice a misplaced decimal point on their own, and the answer keys keep the marking short.\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 Art Gallery\u003c\/strong\u003e - a famous painting is stolen\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecret Blueprint Heist\u003c\/strong\u003e - the blueprint is stolen overnight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChampionship Rugby Ball\u003c\/strong\u003e - stolen the night before the final\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Book Shop\u003c\/strong\u003e - a book walks out of the shop\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExperimental Lab\u003c\/strong\u003e - somebody sabotaged the whole lab\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\u003eMultiplying decimals on every page, written to 5.NBT.7\u003c\/li\u003e\n  \u003cli\u003eDecimals multiplied by whole numbers and by other decimals, so place value is tested both ways\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, and the only way through it is the math. Work the questions, match each answer to the suspect wearing that number, cross that suspect off, and keep going until one name has not been ruled out. Because the elimination depends on getting the arithmetic right, these detective activities do something a page of math worksheets cannot: students catch their own mistakes. One case fills a class period, with no prep and nothing to assemble.\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 middle of the decimals unit, once students can multiply but are still putting the point in the wrong place. That is exactly the error a normal worksheet hides, because the digits look right and the answer is out by a factor of ten. Here a misplaced decimal point crosses off the wrong suspect, so students find the slip themselves and go back to the place value rather than the digits.\u003c\/p\u003e\n\n\u003cp\u003eIt carries 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 alone.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 5th grade, where 5.NBT.7 sits, and used with 6th graders as fluency practice. Fourth graders take it once decimal place value is secure, and 7th graders use it as a refresher before decimal division and percentages.\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\u003eEvery question is about where the decimal point lands, which is where students go wrong\u003c\/li\u003e\n  \u003cli\u003eStudents catch their own errors when the wrong suspect is crossed 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 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":61955573580146,"sku":"10214844","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/multiplying-decimals-worksheets-5th-grade-5-nbt-7-10214844.jpg?v=1792461674"},{"product_id":"fraction-operations-add-subtract-multiply-divide-mystery-detective-worksheets-grades-5-6-printable-detective-pack","title":"Fraction Operations (Add, Subtract, Multiply, Divide) | Mystery Detective Worksheets | Grades 5–6 | Printable Detective Pack","description":"\u003cp\u003eFraction operations practice for 5th Grade and 6th Grade math made engaging and meaningful with fun. Each mystery focuses on operations with fractions—adding, subtracting, multiplying, dividing, and mixed operations—and is a great companion to your order of operations with fractions lessons or fraction review.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMystery Stories \u0026amp; Fraction Skills\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Recipe Sabotage (Addition of Fractions)\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA chef's winning recipe has been secretly changed before a big baking competition. Students add proper fractions with unlike denominators to recover the original ingredient amounts and find who tampered with the recipe.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Stadium Seat Mystery (Subtraction of Fractions)\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eSections of the stadium seating plan have been removed before a championship game. Students subtract proper fractions with unlike denominators to figure out how much seating is missing and identify who altered the plan.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Space Supply Error (Multiplication of Fractions)\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eSomeone has interfered with the supply calculations on a space station. Students multiply proper fractions to check fuel, food, and oxygen amounts and discover who caused the space sabotage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Treasure Share Mix-Up (Division of Fractions)\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA pirate crew's treasure shares have been divided incorrectly. Students divide proper fractions to calculate fair shares and track down who changed the records.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Blueprint Sabotage (Mixed Fraction Operations)\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA new school building design has been altered. Students use mixed fraction operations (addition, subtraction, multiplication, and division) to fix the measurements and reveal who tampered with the blueprints.\u003c\/p\u003e\n\n\u003cp\u003eUnlike traditional escape room activities, these Mini Mystery Detective cases don't require locks, codes, or complicated prep. Students rely on accurate fraction operations and math reasoning to eliminate suspects and solve each case.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSkills Covered\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFraction operations with proper fractions\u003c\/li\u003e\n  \u003cli\u003eAdding and subtracting fractions with unlike denominators\u003c\/li\u003e\n  \u003cli\u003eMultiplying and dividing fractions\u003c\/li\u003e\n  \u003cli\u003eMixed operations with fractions\u003c\/li\u003e\n  \u003cli\u003eSimplifying fractions\u003c\/li\u003e\n  \u003cli\u003eUsing math reasoning and deduction to solve a mystery\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\u003eGrade 5 fraction operations lessons and review\u003c\/li\u003e\n  \u003cli\u003eGrade 6 operations with fractions practice and consolidation\u003c\/li\u003e\n  \u003cli\u003eMath centers or stations\u003c\/li\u003e\n  \u003cli\u003eEarly finishers\u003c\/li\u003e\n  \u003cli\u003eSmall-group intervention\u003c\/li\u003e\n  \u003cli\u003eTest prep or end-of-unit review\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 engaging Mystery Detectives and receive updates, discounts, and new printables for your classroom.\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955622470002,"sku":"15701911","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/fraction-operations-worksheets-5th-grade-math-15701911.jpg?v=1792461527"},{"product_id":"adding-subtracting-integers-digital-escape-room-math-activity-grades-6-9-winter","title":"Adding \u0026 Subtracting Integers Digital Escape Room | Math Activity | Grades 6–9 | Winter","description":"\u003cp\u003e\u003cstrong\u003eLock the lesson and hand over a link\u003c\/strong\u003e — this Adding \u0026amp; Subtracting Integers Digital Escape Room turns winter integer practice into a race to crack the codes. Students solve integer problems, reveal numbers, and work their way out, one puzzle at a time.\u003c\/p\u003e\u003cp\u003eIt's fully digital and self-checking, so wrong answers won't open the lock and you don't mark a thing. Built for Grades 6–9 with a cozy winter theme. Open it in any browser — no app, login, or subscription.\u003c\/p\u003e\u003ch3\u003eQuick details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade levels:\u003c\/strong\u003e 6–9 (integer operations)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Interactive, browser-based digital escape room\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResource type:\u003c\/strong\u003e No-prep, self-checking math activity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkill focus:\u003c\/strong\u003e Adding \u0026amp; subtracting integers\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\u003eA winter storm has locked everything down. The only way out is through a series of integer challenges — solve them correctly and the codes reveal themselves, one frosty puzzle at a time.\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\u003eSolve each integer challenge to reveal a code\u003c\/li\u003e\n\u003cli\u003eEnter the code to unlock the next stage — wrong answers won't open it\u003c\/li\u003e\n\u003cli\u003eThe room self-checks, so students get instant feedback\u003c\/li\u003e\n\u003cli\u003eCrack the final code to escape\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAn interactive digital escape room hosted on a private site\u003c\/li\u003e\n\u003cli\u003eAnimated, self-checking puzzles 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 to share via Google Classroom, email, or your LMS\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSkills covered\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAdding integers with the same and different signs\u003c\/li\u003e\n\u003cli\u003eSubtracting integers\u003c\/li\u003e\n\u003cli\u003eWorking with negative numbers in context\u003c\/li\u003e\n\u003cli\u003eInteger reasoning and problem solving\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBest used for\u003c\/h3\u003e\u003cp\u003eMath centers, tech time, early finishers, sub plans, winter and holiday review, test prep, homeschool, and distance learning.\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61957813764466,"sku":"15206890","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/integers-winter-digital-escape-room-1.jpg?v=1781941764"},{"product_id":"adding-subtracting-integers-digital-escape-room-math-activity-grades-6-9-valentines-day","title":"Adding \u0026 Subtracting Integers Digital Escape Room | Math Activity | Grades 6–9 | Valentine's Day","description":"\u003cp\u003e\u003cstrong\u003eMind the negatives — one sign slip and the lock stays shut\u003c\/strong\u003e — this Adding \u0026amp; Subtracting Integers Digital Escape Room sends students through a Valentine's Day challenge, working with positive and negative numbers to crack each code and escape.\u003c\/p\u003e\u003cp\u003eIt's fully digital and self-checking, so wrong answers won't open the lock and there's nothing for you to grade. 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Students add and subtract positive and negative numbers — get the sign and value right and the codes appear, one puzzle at a time.\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\u003eSolve each integer problem to reveal a code\u003c\/li\u003e\n\u003cli\u003eEnter the code to unlock the next stage — wrong answers won't open it\u003c\/li\u003e\n\u003cli\u003eThe room self-checks, so students get instant feedback\u003c\/li\u003e\n\u003cli\u003eCrack the final code to escape\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAn interactive digital escape room hosted on a private site\u003c\/li\u003e\n\u003cli\u003eAnimated, self-checking puzzles 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 to share via Google Classroom, email, or your LMS\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSkills covered\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAdding integers with the same and different signs\u003c\/li\u003e\n\u003cli\u003eSubtracting integers\u003c\/li\u003e\n\u003cli\u003eWorking with the number line and absolute value\u003c\/li\u003e\n\u003cli\u003eApplying integer rules in problems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBest used for\u003c\/h3\u003e\u003cp\u003eMath centers, tech time, early finishers, sub plans, Valentine's Day and February review, test prep, homeschool, and distance learning.\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61958400377202,"sku":"10908803","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/valentines-day-adding-subtracting-integers-digital-escape-room-1.jpg?v=1781989280"},{"product_id":"multiplying-decimals-winter-digital-escape-room-math-activity-grades-5-7","title":"Multiplying Decimals Winter Digital Escape Room | Math Activity | Grades 5–7","description":"\u003cp\u003e\u003cstrong\u003eLock the lesson and hand over a link.\u003c\/strong\u003e Your students step into a frozen winter world where every icy lock hides a decimal multiplication problem. 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The only way out is to multiply each set of decimals, collect every code, and unlock the final door before the storm closes in.\u003c\/p\u003e\n\u003ch3\u003eHow the escape room works\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOpen the private link — no app or login required.\u003c\/li\u003e\n\u003cli\u003eWork through a series of animated decimal-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 the room checks itself.\u003c\/li\u003e\n\u003cli\u003eCrack the final code to escape and win.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\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.\u003c\/li\u003e\n\u003cli\u003eA PDF containing your private access link to share via Google Classroom, email, or any LMS.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSkills covered\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMultiplying decimals by whole numbers and decimals\u003c\/li\u003e\n\u003cli\u003ePlacing the decimal point correctly in a product\u003c\/li\u003e\n\u003cli\u003eDecimal computation fluency\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBest used for\u003c\/h3\u003e\n\u003cp\u003eMath centers, tech time, early finishers, sub plans, homeschool, test prep, review days, and distance learning.\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61959770702194,"sku":"10781294","price":3.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/winter-multiplying-decimals-digital-escape-room-1.jpg?v=1782000846"},{"product_id":"multiplying-decimals-summer-digital-escape-room-math-activity-grades-5-7","title":"Multiplying Decimals Digital Escape Room | Math Activity | Grades 5–7 | Spy Mission","description":"\u003cp\u003eRecruit your students as secret agents! This animated, self-checking digital escape room turns multiplying decimals into a Top Secret spy mission your students will race to crack.\u003c\/p\u003e\u003cp\u003eNo printing, no logins, no prep — just send the private link and let your agents 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 5–7\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 decimals and placing the decimal point correctly\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\u003eAgent X is on the trail of the Phantom Pack, and their stolen plans are locked behind decimal codes. Multiply the decimals correctly to crack each code and move deeper into the mission — one misplaced decimal point and the door 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 decimals by whole numbers and decimals\u003c\/li\u003e\n\u003cli\u003ePlacing the decimal point correctly\u003c\/li\u003e\n\u003cli\u003eEstimating decimal products\u003c\/li\u003e\n\u003cli\u003eSolving decimal word problems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBest used for\u003c\/h3\u003e\u003cp\u003eMath centers, tech time, early finishers, review, sub plans, homeschool, test prep, and distance learning.\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61962193535346,"sku":"11633715","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/original-11633715-1.jpg?v=1782108072"},{"product_id":"multiplying-decimals-csi-mystery-worksheets-grades-4-7-zombie-apocalypse","title":"Multiplying Decimals CSI Mystery Worksheets | Grades 4–7 | Zombie Apocalypse","description":"\u003cp\u003eHalloween zombie apocalypse CSI math worksheets on multiplying decimals, built for October and the week when the outbreak reaches the classroom. One of the things outside used to be someone your students knew, and this CSI Mystery Detective multiplication mystery for 5th grade and 6th grade identifies it through the numbers it left behind. Students multiply decimals, work multi digit multiplication, and add and subtract large numbers, and every correct answer crosses one suspect off the line-up until a single description fits. Full color and black-and-white pages with answer keys, ready to print and hand straight to desks. They also color the right arrow forward and draw a line through the letter that matters.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: Zombie Apocalypse\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe outbreak started at school and finished it. Friends, family and teachers have all gone the same way, and the survivors are barricaded into what is left of the building. One of the things outside used to be someone your students knew. Identifying which one means working the decimals it left behind - how big it is, what it was, how long it has been out there - until only one description fits.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMultiplying decimals, with answers running into the thousands\u003c\/li\u003e\n  \u003cli\u003eMulti-digit multiplication used to color the correct arrow forward\u003c\/li\u003e\n  \u003cli\u003eA matching page where the line drawn passes through the letter that matters\u003c\/li\u003e\n  \u003cli\u003eAddition with large multi-digit numbers\u003c\/li\u003e\n  \u003cli\u003eAddition and subtraction along a path where the final total settles the clue\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\u003eEvery CSI Mystery Detective case runs on the same engine: solve, eliminate, repeat. The class is handed a crime and a page of math worksheets, and the answers cross suspects off one by one until a single name remains. It is a math escape room without locks, apps or preparation of any kind. Because the deduction only closes on correct arithmetic, detective activities get checked by the student rather than by you. As a math activity it fills a lesson, sits in math centers, or runs itself as 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\u003eHalloween week in October, when a normal worksheet will not hold them\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 into 6th and 7th grade for students who need decimal and multiplication review. Fourth graders who have already met decimals can manage it with support, usually working in pairs on the multiplication pages. It also gives older students who are behind on decimal place value 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":61981864460658,"sku":"3979483","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/zombie-apocalypse-csi-mystery-detective-decimals-grades-4-7-3979483.jpg?v=1792460001"},{"product_id":"four-quadrant-ordered-pairs-mystery-detective-worksheets-grades-5-7-coordinate-plane","title":"Four-Quadrant Ordered Pairs | Mystery Detective Worksheets | Grades 5–7 | Coordinate Plane","description":"\u003cp\u003eCoordinate plane activities, ordered pairs worksheets, and four quadrant graphing practice with positive and negative integers for 6th grade are all included in this printable Mini Mystery Detective pack of math worksheets. Students read the points plotted across all four quadrants of a labeled coordinate grid, write the ordered pair for each one, and use their answers to eliminate suspects and unmask the villain in five detective cases - perfect for math centers, morning work, early finishers, sub plans, and spiral review. Completely no prep - just print and go.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eWriting the ordered pair for points plotted in all four quadrants, from (5,3) to (-4,-6)\u003c\/li\u003e\n  \u003cli\u003eReading negative coordinates correctly - knowing that left of zero and below zero both mean a minus sign\u003c\/li\u003e\n  \u003cli\u003eUsing the signs in an ordered pair to tell which quadrant a point sits in\u003c\/li\u003e\n  \u003cli\u003ePoints that sit right on the x-axis and the y-axis, where one coordinate is zero\u003c\/li\u003e\n  \u003cli\u003eCatching reversed and mis-signed coordinates - (2,-5) and (-2,5) belong to two different suspects, so a slip shows up immediately\u003c\/li\u003e\n  \u003cli\u003eReading the x-coordinate and the y-coordinate in the correct order, counting out from the origin\u003c\/li\u003e\n  \u003cli\u003eSelf-checking answer keys with every ordered pair marked in red beside its point on the grid\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFive cases to crack: The Missing Backpack, The Stolen Sandwich, The Lost Football, The Vanished Bell, and The Hidden Paintbrush. Every case has its own coordinate grid, its own cast of suspects, and its own villain. Answer keys are included for every case.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is a Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA no-prep detective activity where students solve math problems to cross off suspects and unmask the culprit. It works like an escape room without the locks - each ordered pair a student reads correctly eliminates one suspect, and the last suspect standing is the villain. Because a wrong answer leaves the wrong suspect uncrossed, students catch their own mistakes without waiting for you. Skill practice plus critical thinking in one engaging, self-checking worksheet set.\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\u003eMath centers and station rotations\u003c\/li\u003e\n  \u003cli\u003eMorning work and bell ringers\u003c\/li\u003e\n  \u003cli\u003eEarly finishers who need a challenge\u003c\/li\u003e\n  \u003cli\u003eSub plans and emergency days\u003c\/li\u003e\n  \u003cli\u003eHomework and independent practice\u003c\/li\u003e\n  \u003cli\u003eSpiral review before an integers or geometry unit test\u003c\/li\u003e\n  \u003cli\u003eSmall group intervention and reteaching\u003c\/li\u003e\n  \u003cli\u003eWhole class warm-ups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for 6th graders. Also beneficial for struggling 7th and 8th graders who need extra coordinate plane practice and advanced 5th graders who have finished the first quadrant and are ready for negative numbers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love Mystery Detectives\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print the pages and hand them out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking, so students spot their own errors and you are not marking as you circulate\u003c\/li\u003e\n  \u003cli\u003eThe detective hook keeps the whole class on task, including the students who groan at a worksheet\u003c\/li\u003e\n  \u003cli\u003eReal skill practice with genuine reasoning attached, not busy work\u003c\/li\u003e\n  \u003cli\u003eBlack and white printing throughout, so it is cheap to run a class set\u003c\/li\u003e\n  \u003cli\u003eAnswer keys let a substitute teacher or a parent volunteer run it cold\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 Mystery Detectives, coordinate plane and integer worksheets, and detective-themed activities for elementary and middle school classrooms.\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62170486014322,"sku":"17323032","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/coordinate-plane-all-four-quadrants-ordered-pairs-worksheets-6th-grade-17323032.jpg?v=1792461395"},{"product_id":"adding-subtracting-integers-csi-mystery-bank-heist","title":"Adding \u0026 Subtracting Integers CSI Mystery Worksheets | Grades 6–8 | The Bank Heist","description":"\u003cp\u003eAdding and subtracting integers worksheets, positive and negative numbers practice, and integer addition and subtraction activities for 6th grade, 7th grade and 8th grade math are all included in this CSI Mystery Detective — a no-prep math activity. Students work through integer problems - adding a negative, subtracting a negative, and answers that land either side of zero - to eliminate suspects and work out which cash bag was taken from the bank vault. Perfect for middle school math centers, spiral review, test prep, sub days and independent practice, and completely no prep - just print and go.\u003c\/p\u003e\n\u003cp\u003eEvery clue is built on integer addition and subtraction, so students get negative number practice, sign work, and answers on both sides of zero woven through one story. A cash bag has gone from a bank vault that stayed locked all weekend, and only the math will say which one.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAdding integers with unlike signs, where the answer can land either side of zero: -13 + 4, -25 + 6\u003c\/li\u003e\n  \u003cli\u003eSubtracting a larger number from a smaller one so the answer goes negative: 26 - 40, 30 - 45\u003c\/li\u003e\n  \u003cli\u003eSubtracting a negative and recognizing it as adding: 19 - (-2), 6 - (-37)\u003c\/li\u003e\n  \u003cli\u003eAdding a negative and recognizing it as subtracting: 45 + (-8), 17 + (-4)\u003c\/li\u003e\n  \u003cli\u003eJudging whether a given answer is correct, and catching the sign error when it is not\u003c\/li\u003e\n  \u003cli\u003eWorking a running chain of additions and subtractions that crosses zero again and again\u003c\/li\u003e\n  \u003cli\u003eMatching integer problems to their answers and tracing a route through a number maze\u003c\/li\u003e\n  \u003cli\u003eComplete answer keys\u003c\/li\u003e\n  \u003cli\u003eFull color and ink-saving black and white versions of every page\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOne full-length case to crack, with every clue building on the last.\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 - like an escape room without the locks. Students work through math problems to collect evidence, eliminate suspects, and reveal who did it. It combines real skill practice with critical thinking and a detective hook that keeps the whole class engaged.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis integers CSI Mystery Detective can be used any time you are teaching or revisiting positive and negative numbers. Teachers love it for:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIntroducing or consolidating an integers unit\u003c\/li\u003e\n  \u003cli\u003eMiddle school math centers and small group rotations\u003c\/li\u003e\n  \u003cli\u003eWarm-ups, morning work and early finishers\u003c\/li\u003e\n  \u003cli\u003eSubstitute teacher plans\u003c\/li\u003e\n  \u003cli\u003eInteger review before state testing\u003c\/li\u003e\n  \u003cli\u003eHomework and end-of-unit spiral practice\u003c\/li\u003e\n  \u003cli\u003eWhole-class challenge days and enrichment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned for 6th grade, 7th grade and 8th grade integer work. Also beneficial for 9th graders who still need confidence with negative numbers before algebra, and advanced 5th graders ready for a challenge.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective packs\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFeels like a math escape room, with no locks and no technology required\u003c\/li\u003e\n  \u003cli\u003eThe detective storyline keeps students working through problem after problem\u003c\/li\u003e\n  \u003cli\u003eEasy prep - simply print and go\u003c\/li\u003e\n  \u003cli\u003eThe pages check themselves - a wrong answer stops the mystery in its tracks, so students find their own mistake before it ever reaches your marking pile\u003c\/li\u003e\n  \u003cli\u003eWorks for independent practice, partners, small groups or a whole class challenge\u003c\/li\u003e\n  \u003cli\u003eBuilds integer fluency, reasoning and problem solving together\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mystery Detective packs, integer and middle school 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":62265122193778,"sku":"17508640","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/adding-and-subtracting-integers-worksheets-positive-negative-numbers-mystery-detective-bank-heist-17508640.jpg?v=1792459155"},{"product_id":"decimal-operations-csi-mystery-bank-heist","title":"Decimal Operations CSI Mystery Worksheets | Grades 5–6 | The Bank Heist","description":"\u003cp\u003eDecimal operations worksheets, adding and subtracting decimals practice, multiplying and dividing decimals activities, and powers of ten work for 5th grade and 6th grade math are all included in this CSI Mystery Detective — a no-prep math activity. Students work through all four operations with decimals - lining up the decimal point, working with money to the cent, and moving the decimal point when multiplying and dividing by 10 and 100 - to eliminate suspects and work out which cash bag was taken from the bank vault. Perfect for math centers, spiral review, test prep, sub days and independent practice, and completely no prep - just print and go.\u003c\/p\u003e\n\u003cp\u003eEvery clue is built on decimals, so students add, subtract, multiply, divide, compare and order their way through one story. A cash bag has gone from a bank vault that stayed locked all weekend, and only the math will say which one.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAdding and subtracting decimals to the hundredths, keeping the decimal points lined up: 32.93 + 20.40, 68.79 - 6.87\u003c\/li\u003e\n  \u003cli\u003eMultiplying decimals by whole numbers: 5.3 x 8, 1.25 x 3\u003c\/li\u003e\n  \u003cli\u003eDividing decimals by whole numbers and by decimals: 38.8 ÷ 4, 4.5 ÷ 0.9\u003c\/li\u003e\n  \u003cli\u003eMultiplying and dividing by 10 and 100 by moving the decimal point: 6.75 x 10, 50 ÷ 100\u003c\/li\u003e\n  \u003cli\u003eComparing and ordering decimals from smallest to largest: 0.5, 0.84, 1.01, 1.1\u003c\/li\u003e\n  \u003cli\u003eWorking with decimals as money - checking bank deposits, withdrawals and balances to the cent\u003c\/li\u003e\n  \u003cli\u003eComplete answer keys\u003c\/li\u003e\n  \u003cli\u003eFull color and ink-saving black and white versions of every page\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOne full-length case to crack, with every clue building on the last - from a coded message to a bank floor plan the thief escaped through.\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 - like an escape room without the locks. Students work through math problems to collect evidence, eliminate suspects, and reveal who did it. It combines real skill practice with critical thinking and a detective hook that keeps the whole class engaged.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIntroducing or consolidating a decimals unit\u003c\/li\u003e\n  \u003cli\u003eUpper elementary and middle school math centers\u003c\/li\u003e\n  \u003cli\u003eDecimal review before state testing\u003c\/li\u003e\n  \u003cli\u003eWarm-ups, morning work and early finishers\u003c\/li\u003e\n  \u003cli\u003eSubstitute teacher plans\u003c\/li\u003e\n  \u003cli\u003eHomework and end-of-unit spiral practice\u003c\/li\u003e\n  \u003cli\u003eWhole-class challenge days and enrichment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis decimals CSI Mystery Detective can be used any time you are teaching or revisiting decimal computation. Teachers love it for:\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned for 5th grade and 6th grade decimal work. Also beneficial for 7th graders who need more confidence with decimals before pre-algebra, and advanced 4th graders ready for a challenge.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective packs\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFeels like a math escape room, with no locks and no technology required\u003c\/li\u003e\n  \u003cli\u003eThe detective storyline keeps students working through problem after problem\u003c\/li\u003e\n  \u003cli\u003eEasy prep - simply print and go\u003c\/li\u003e\n  \u003cli\u003eThe pages check themselves - a wrong answer stops the mystery in its tracks, so students find their own mistake before it ever reaches your marking pile\u003c\/li\u003e\n  \u003cli\u003eWorks for independent practice, partners, small groups or a whole class challenge\u003c\/li\u003e\n  \u003cli\u003eBuilds decimal fluency, place value understanding and problem solving together\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mystery Detective packs, decimal and upper elementary 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":62265122423154,"sku":"17510086","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/decimal-operations-mystery-detective-add-subtract-multiply-divide-decimals-worksheets-17510086.jpg?v=1792459395"},{"product_id":"absolute-value-and-opposites-mystery-detective","title":"Absolute Value and Opposites | Mystery Detective Worksheets | Grades 6–9","description":"\u003cp\u003eThese absolute value worksheets for 6th grade, 7th grade and 8th grade cover opposites and integers practice and absolute value expressions in ten printable Mini Mystery Detective math cases. They're no prep, with an answer key for every case. Use them in math centers, for morning work or homework, or as review before a unit test.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTen one-page cases build from finding the absolute value of an integer to expressions with decimals, fractions and mixed numbers. Students meeting absolute value for the first time can start at Level 1, and students who need more of a stretch can go straight to the later levels.\u003c\/p\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\u003eAbsolute value of an integer, and the opposite of a number\u003c\/li\u003e\n  \u003cli\u003eAdding and subtracting absolute values, including answers that finish negative\u003c\/li\u003e\n  \u003cli\u003eSimplifying what's inside the bars before taking the absolute value\u003c\/li\u003e\n  \u003cli\u003eTelling the size of a number apart from where it sits on the number line\u003c\/li\u003e\n  \u003cli\u003eMultiplying and dividing with absolute value\u003c\/li\u003e\n  \u003cli\u003eAbsolute value with decimals, fractions and mixed numbers in simplest form\u003c\/li\u003e\n  \u003cli\u003eA case notes page that teaches distance from zero on a number line, with worked examples and the mistakes students make most\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTen mysteries to solve, a detective's case log to track the culprits, a certificate for finishing the file, and answer keys for every case.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Ten Mysteries\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe cases are leveled. You can hand out different pages to different students.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLevel 1, Absolute Value Basics - The Flooded Pool Lane, The Muted Band Room\u003c\/li\u003e\n  \u003cli\u003eLevel 2, Opposites and Differences - The Wilted Plant Beds, The Jammed Snack Box\u003c\/li\u003e\n  \u003cli\u003eLevel 3, Inside the Bars First - The Cracked Art Kiln, The Tangled Bag Rack\u003c\/li\u003e\n  \u003cli\u003eLevel 4, Multiples and Multi-Step - The Lost Chess Clock, The Spilled Lab Tray\u003c\/li\u003e\n  \u003cli\u003eLevel 5, Decimals and Fractions - The Wiped Class Photo, The Empty Trophy Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is a Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA no-prep detective activity where students solve math problems to cross off suspects and unmask the culprit. Each page is self-checking.\u003c\/p\u003e\n\u003cp\u003eIf an answer is wrong, it won't match a suspect, and students can go back and find the mistake.\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\u003cul\u003e\n  \u003cli\u003eSmall group work and intervention\u003c\/li\u003e\n  \u003cli\u003eBell ringers and warm-ups\u003c\/li\u003e\n  \u003cli\u003eSub plans\u003c\/li\u003e\n  \u003cli\u003eIndependent practice after a lesson\u003c\/li\u003e\n  \u003cli\u003eDifferentiated practice in a mixed-ability class\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned for 6th, 7th and 8th grade math. It also suits advanced 5th graders meeting absolute value early, and high school students who want a refresher before absolute value equations.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love Mystery Detectives\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNo prep needed. Print the pages you want.\u003c\/li\u003e\n  \u003cli\u003eSelf-checking\u003c\/li\u003e\n  \u003cli\u003eFive levels of difficulty in one pack\u003c\/li\u003e\n  \u003cli\u003eBlack and white pages that print cleanly\u003c\/li\u003e\n  \u003cli\u003eA detective story on every page\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 Mystery Detectives, CSI Mystery Detectives, and detective-themed math activities for elementary and middle school classrooms.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\"\u003ehttps:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62593088061810,"sku":"17543270","price":4.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/absolute-value-expressions-practice-self-checking-math-centers-answer-keys.jpg?v=1792612689"},{"product_id":"prime-and-composite-numbers-mystery-detective","title":"Prime and Composite Numbers | Mystery Detective Worksheets | Grades 3–6 | Museum","description":"\u003cp\u003ePrime and composite numbers, factors and multiples, and factor pairs are the skills behind all ten cases in these 4th grade math Mini Mystery Detective worksheets. Use the factors and multiples practice pages in math centers, for morning work or with early finishers. They have a museum theme, and they're no prep. Every case comes with an answer key.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eUse this pack once your class knows its multiplication facts. The cases take place in a museum after dark, with a stolen dinosaur egg and a walking mummy. Students find each answer on the suspect list and cross that name off, and every CSI Mini Mystery Detective page is self-checking.\u003c\/p\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\u003eTen one-page detective cases on factors, multiples, and prime and composite numbers, each with an answer key\u003c\/li\u003e\n\u003cli\u003eMissing factor and factor pair practice with numbers to 100\u003c\/li\u003e\n\u003cli\u003eCases that ask for the factor or multiple, and cases that ask for the one that is NOT\u003c\/li\u003e\n\u003cli\u003eA mixed review case that brings all three skills together\u003c\/li\u003e\n\u003cli\u003eA reference page with worked examples for factors, multiples, prime and composite numbers\u003c\/li\u003e\n\u003cli\u003eA contents page, teacher instructions, a detective case log and a certificate of achievement\u003c\/li\u003e\n\u003cli\u003e30 black and white pages, ready to print\u003c\/li\u003e\n\u003c\/ul\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 Stolen Dinosaur Egg\u003c\/strong\u003e - find the missing factor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Mummy That Walked\u003c\/strong\u003e - pick the factor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Cracked Vase\u003c\/strong\u003e - spot what is not a factor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Missing Diamond\u003c\/strong\u003e - pick the multiple\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Pharaoh's Lost Mask\u003c\/strong\u003e - spot what is not a multiple\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Muddy Footprints\u003c\/strong\u003e - skip count to the next multiple\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe T. Rex That Roared\u003c\/strong\u003e - prime and composite to 60\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Blank Painting\u003c\/strong\u003e - find the next prime number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Switched-Off Cameras\u003c\/strong\u003e - prime and composite to 100\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Knight's Missing Sword\u003c\/strong\u003e - mixed review\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe cases start with factors, then multiples, then prime and composite numbers. You can hand out one case a day through the unit, or pull a single page when a group needs more practice with one skill. The mixed case at the end shows you quickly who can tell a factor from a multiple and a prime from a composite number. It also works for guided math groups, homework, a prime and composite review before a test, sub plans, homeschool lessons, and back to school or end of year review.\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, where students find factor pairs, recognize multiples and decide whether a number is prime or composite, all with whole numbers to 100. It also makes a handy factors and multiples review for 5th grade before greatest common factor and least common multiple.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love Mystery Detectives\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReady to print\u003c\/li\u003e\n\u003cli\u003eA correct answer crosses off a suspect\u003c\/li\u003e\n\u003cli\u003eCases build step by step, and different students can work on different pages\u003c\/li\u003e\n\u003cli\u003eA museum mystery with dinosaurs, mummies and missing treasure\u003c\/li\u003e\n\u003cli\u003eEasy to print in black and white\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\"\u003ehttps:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62593088487794,"sku":"17742289","price":4.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/factors-and-multiples-worksheets-4th-grade-math-csi-mini-mystery_d47c2155-eced-4fa6-b9aa-e200af342e98.jpg?v=1792612771"},{"product_id":"gcf-and-lcm-mystery-detective","title":"GCF and LCM | Mystery Detective Worksheets | Grades 4–7 | Market Day","description":"\u003cp\u003eGCF and LCM worksheets for 5th grade, 6th grade and 7th grade make up this self-checking Mini Mystery Detective pack, with greatest common factor and least common multiple practice in ten printable math activities. The factors and multiples cases have a market day theme. Use them for math centers, small groups, homework or test prep. They're no prep, and answer keys are included.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eStudents find the greatest common factor of numbers to 100 and the least common multiple of numbers to 30, then work mixed pages and finish with three numbers. When an answer isn't on the suspect list, students know to look at that problem again.\u003c\/p\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\u003eFinding the greatest common factor of two numbers to 100: GCF(54, 90), GCF(48, 84)\u003c\/li\u003e\n  \u003cli\u003eFinding the least common multiple of two numbers, first within the times tables and then to 30: LCM(7, 10), LCM(15, 18), LCM(26, 30)\u003c\/li\u003e\n  \u003cli\u003eMixed GCF and LCM pages, where students read which one the question asks for\u003c\/li\u003e\n  \u003cli\u003eThe greatest common factor and least common multiple of three numbers: GCF(36, 54, 81), LCM(6, 8, 10)\u003c\/li\u003e\n  \u003cli\u003eA reference page on factors and multiples, the listing method for each, and what happens when one number divides the other\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTen leveled cases run through the Saturday market: The Vanished Open Sign, The Cracked Egg Crates, The Switched Price Tags, The Spilled Milk Can, The Broken Bread Scales, The Empty Market Basket, The Cold Bakery Oven, The Runaway Delivery Cart, The Ruined Wedding Cake and The Bolted Bakery Door.\u003c\/p\u003e\n\u003cp\u003eAnswer keys, a detective's case log and a certificate of achievement are included.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is a Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA no-prep detective activity where students solve math problems to cross off suspects and unmask the culprit.\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\u003cul\u003e\n  \u003cli\u003eGuided math\u003c\/li\u003e\n  \u003cli\u003eWarm ups, bell ringers and morning work\u003c\/li\u003e\n  \u003cli\u003eIndependent practice\u003c\/li\u003e\n  \u003cli\u003eSpiral review before fractions, since common denominators need the LCM\u003c\/li\u003e\n  \u003cli\u003eEnd-of-unit review\u003c\/li\u003e\n  \u003cli\u003eIntervention, tutoring and enrichment\u003c\/li\u003e\n  \u003cli\u003eEarly finishers and indoor recess\u003c\/li\u003e\n  \u003cli\u003eSubstitute plans\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned for 5th grade and 6th grade, where greatest common factor and least common multiple are taught. 7th graders who need a refresher before fractions with unlike denominators can use it too, and so can advanced 4th graders.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love Mystery Detectives\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNo prep\u003c\/li\u003e\n  \u003cli\u003eSelf-checking\u003c\/li\u003e\n  \u003cli\u003eLeveled cases you can hand out by student\u003c\/li\u003e\n  \u003cli\u003eMixed GCF and LCM pages to practice reading the question\u003c\/li\u003e\n  \u003cli\u003eBlack and white, easy to print\u003c\/li\u003e\n  \u003cli\u003eA market day mystery in every case\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 Mystery Detectives, factors and multiples activities, and detective-themed math for upper elementary and middle school classrooms.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\"\u003ehttps:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62593088520562,"sku":"17550594","price":4.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/factors-and-multiples-practice-answer-keys-certificate-self-checking-mystery-detective.jpg?v=1792612771"}],"url":"https:\/\/kiwilandeducation.com\/collections\/math-6-ns.oembed","provider":"Kiwiland Education","version":"1.0","type":"link"}