{"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","url":"https:\/\/kiwilandeducation.com\/products\/4-digit-addition-with-regrouping-mystery-detective-worksheets-grades-2-5-winter-theme","provider":"Kiwiland Education","version":"1.0","type":"link"}