{"product_id":"4-digit-addition-with-regrouping-mystery-detective-worksheets-grades-2-5-christmas-theme","title":"4-Digit Addition with Regrouping | Mystery Detective Worksheets | Grades 2–5 | Christmas Theme","description":"\u003cp\u003eChristmas 4 digit addition with regrouping math activities for 3rd grade and 4th grade: five math worksheets in the Mystery Detective format, carrying across four columns throughout. Print and go with full answer keys, no prep, for December math centers, early finishers, homework, morning work and sub plans. Christmas math for 3rd grade and 4th grade that still does real work: 4 digit addition with regrouping, carrying across every column, inside a school Christmas mystery. Teachers use it as a December math center, a homework week or a Christmas math review, and one CSI Mini Mystery Detective download covers the week.\u003c\/p\u003e\n\n\u003cp\u003eThe last week before the break is when this one earns its place, and four digit addition with a secret Santa to find keeps a fourth grade class happily on the page right up to the bell. Every page is self-marking, and one CSI Mini Mystery Detective math case a day covers the week.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWho is Secret Santa\u003c\/strong\u003e - a gift arrives with no name\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChristmas Cheer\u003c\/strong\u003e - kindness turning up all December\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSinging Christmas Carols\u003c\/strong\u003e - somebody is singing down the hall\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMissing Xmas Present\u003c\/strong\u003e - a gift goes astray before Christmas\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurkey Trouble\u003c\/strong\u003e - nobody will carve the bird\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive case files, each with a crime sheet and its own lineup of suspects\u003c\/li\u003e\n  \u003cli\u003eFour digit addition with regrouping on every page\u003c\/li\u003e\n  \u003cli\u003eCarrying across four columns, a step up from three digit work\u003c\/li\u003e\n  \u003cli\u003eEach answer matches one suspect and no other, so the page checks itself\u003c\/li\u003e\n  \u003cli\u003eA full answer key for every case\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective puts a crime, a lineup and a page of math in front of your class, and the only way to name the culprit is to get the math right. Each suspect carries a number, each solved question matches one of them, and that suspect is crossed off until a single name remains. Because a wrong sum eliminates the wrong person, these detective activities make students check their work in a way math worksheets cannot.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eUse this in December once three digit carrying is secure, when you want the class moving on to four columns and you need it to happen without a fight. The Christmas setting buys you the attention and the math underneath is unchanged. A carry dropped in the thousands column names the wrong suspect, so students go back and check rather than waiting for the page to be graded.\u003c\/p\u003e\n\n\u003cp\u003eTeachers use it for test prep, homework, math centers, morning work, early finishers, sub plans and homeschool lessons, with a class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 3rd grade and 4th grade, where four digit addition sits in the standards. Fifth graders take it as a quick refresher, and second graders manage it once three digit carrying is secure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMoves the class up to four columns without a fight\u003c\/li\u003e\n  \u003cli\u003eStudents check their own work when the wrong suspect comes off\u003c\/li\u003e\n  \u003cli\u003eNo prep in December\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners, or one student alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955376841074,"sku":"5035066","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/christmas-4-digit-addition-with-regrouping-grade-4-5035066.jpg?v=1792460828","url":"https:\/\/kiwilandeducation.com\/products\/4-digit-addition-with-regrouping-mystery-detective-worksheets-grades-2-5-christmas-theme","provider":"Kiwiland Education","version":"1.0","type":"link"}