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