{"product_id":"4-digit-subtraction-with-regrouping-mystery-detective-worksheets-grades-3-6-christmas-theme","title":"4-Digit Subtraction with Regrouping | Mystery Detective Worksheets | Grades 3–6 | Christmas Theme","description":"\u003cp\u003e4 digit subtraction with regrouping Christmas math worksheets for 3rd grade and 4th grade, five Mystery Detective math cases with borrowing across four columns on every page. No prep December math activities with full answer keys, print and go, for math centers, early finishers, homework, morning work and sub plans. Four digit subtraction with regrouping is the biggest borrowing of the year, and this pack gives 3rd grade and 4th grade students a school Christmas reason to practice it. It is December math that runs as a math center, a sub plan or a homework set, and every CSI Mini Mystery Detective page is self-marking.\u003c\/p\u003e\n\n\u003cp\u003eKeep this one for the week before the break, because a class can run these CSI Mini Mystery Detective math cases without you at the front and a substitute has nothing to explain. Students subtract, match each answer to a suspect and cross that name off, so the marking is student-led even on the biggest borrowing of the year.\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\u003eMissing Marshmallows\u003c\/strong\u003e - the marshmallows disappear overnight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTeachers Christmas Lunch\u003c\/strong\u003e - who cooked the staffroom lunch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChristmas Presents\u003c\/strong\u003e - who gets to unwrap first\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMissing Candy Canes\u003c\/strong\u003e - stripped straight off the tree\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChristmas Star\u003c\/strong\u003e - who puts the star on top\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 subtraction with regrouping on every page\u003c\/li\u003e\n  \u003cli\u003eBorrowing across four columns, the hardest subtraction at this level\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 a printable 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 show up mistakes a page of math worksheets would hide.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFour digit borrowing is the skill that most needs repetitions and least often gets them, and November and December is when the timetable has the least room for it. Five short cases fix both problems at once. Because one wrong borrow puts the wrong name in the frame, students trace the error back through the columns themselves instead of handing you the page.\u003c\/p\u003e\n\n\u003cp\u003eIt covers 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 3rd grade and 4th grade, where four digit subtraction sits in the standards. Fifth graders use it as a fluency refresher, and second graders take it once three digit borrowing 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\u003eFive pages on the hardest subtraction third and fourth graders meet\u003c\/li\u003e\n  \u003cli\u003eStudents trace a wrong borrow back when the wrong name comes off\u003c\/li\u003e\n  \u003cli\u003eNo prep in the busiest month of the year\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":61955344138610,"sku":"5035455","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/christmas-4-digit-subtraction-with-regrouping-grade-4-5035455.jpg?v=1792461132","url":"https:\/\/kiwilandeducation.com\/products\/4-digit-subtraction-with-regrouping-mystery-detective-worksheets-grades-3-6-christmas-theme","provider":"Kiwiland Education","version":"1.0","type":"link"}