{"product_id":"thanksgiving-3-digit-addition-subtraction-regrouping-mystery-detective-grades-2-3","title":"3-Digit Addition \u0026 Subtraction Regrouping | Mystery Detective | Thanksgiving","description":"\u003cp\u003eThanksgiving 3 digit addition and subtraction with regrouping for 2nd and 3rd grade, in ten CSI Mini Mystery Detective math cases. Every page mixes addition with regrouping and three digit subtraction with regrouping, including subtracting across zeros. Use the cases in your November math centers, for morning work or as homework. There's nothing to prep, and every case has an answer key.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe parade turkey has escaped, somebody stuffed corn husks into the sousaphone, and the roast turkey has vanished from the counter. Your students are the detectives on every case. Each 3 digit addition and subtraction problem they get right crosses another suspect off the list. It's self-checking, too. When only one name is left, they've got the whole page right, and that last suspect is the villain.\u003c\/p\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 full detective case printed on a single page. There's a short story at the top, a set of problems, and a lineup of suspects with a number beside each one. Nothing needs cutting out or laminating. Students only need a pencil.\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\u003e160 problems across 10 one-page Thanksgiving cases, 16 on each page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for all ten cases\u003c\/li\u003e\n  \u003cli\u003eEight additions and eight subtractions on every page. Sums stay at 999 or less, and every subtraction answer has three digits\u003c\/li\u003e\n  \u003cli\u003eRegrouping in the ones, in the tens or in both, plus two subtractions across a zero on each page\u003c\/li\u003e\n  \u003cli\u003eA How to Regroup page in hundreds, tens and ones, with 368 + 475 and 532 - 278 worked out\u003c\/li\u003e\n  \u003cli\u003eTeacher instructions, a contents page, a Detective's Case Log and a Top Detective certificate\u003c\/li\u003e\n  \u003cli\u003e30 pages, all black and white for easy printing\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 Gobbler on the Loose\u003c\/strong\u003e - the turkey out of its pen before the parade\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Missing Marching Drum\u003c\/strong\u003e - the band's big drum gone on Thanksgiving morning\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Stuffed-Up Sousaphone\u003c\/strong\u003e - corn husks pushed into the sousaphone\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Runaway Hay Wagon\u003c\/strong\u003e - the hayride wagon rolling down the hill with nobody on it\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Swapped Giant Pumpkin\u003c\/strong\u003e - a giant pumpkin traded for a tiny one overnight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Missing Scarecrow Hat\u003c\/strong\u003e - the scarecrow's floppy hat taken\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Empty Apple Bushel\u003c\/strong\u003e - a bushel of apples gone from the farm stand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Lost Football Trophy\u003c\/strong\u003e - the trophy missing before the big game\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Scattered Leaf Pile\u003c\/strong\u003e - Grandpa's leaf pile kicked all over the yard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Stolen Feast Turkey\u003c\/strong\u003e - the roast turkey gone from the counter\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\u003eBring the cases out in the two weeks before Thanksgiving, once your class has learned to regroup with three digit numbers. Addition and subtraction are on the same page, so students have to read each sign before they start. The How to Regroup page can sit beside an intervention group as a reminder of the steps. A single case works as a bell ringer or a review before a test, and a few can go in your sub plans for the days before the break. Homeschool families can use the pack too, and 4th grade teachers can use it to review regrouping.\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 2nd grade (2.NBT.B.7) and 3rd grade (3.NBT.A.2), where students learn to add and subtract within 1,000. In 4th grade it's a regrouping review.\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\u003cp\u003eAll Mystery Detective packs follow one routine. After the first case, students can start any other case on their own, in this pack or a different one. The cases don't build on each other. Pick whichever one fits your week. Naming the villain gives students a clear finish line, and you can check a page against its key in a minute or two.\u003c\/p\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\u003ehttps:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62845652697458,"sku":"18298669","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/thanksgiving-3-digit-addition-and-subtraction-with-regrouping-2nd-3rd-grade.jpg?v=1794423780","url":"https:\/\/kiwilandeducation.com\/products\/thanksgiving-3-digit-addition-subtraction-regrouping-mystery-detective-grades-2-3","provider":"Kiwiland Education","version":"1.0","type":"link"}