{"product_id":"4-digit-subtraction-with-regrouping-mystery-detective-worksheets-grades-3-5-valentines-day","title":"4-Digit Subtraction with Regrouping | Mystery Detective Worksheets | Grades 3–5 | Valentine's Day","description":"\u003cp\u003e4 digit subtraction with regrouping worksheets for 3rd grade and 4th grade, five Valentines Day math activities as Mystery Detective cases, borrowing across four columns throughout. No prep February math activities with full answer keys, print and go, for early finishers, math centers, homework, morning work and sub plans. Flowers left overnight, a card with no signature and a bouquet with the label torn off carry the week, and every answer matches one suspect only and crosses them off the lineup, and a CSI Mini Mystery Detective gets four digit borrowing done in the week nobody wants to do it.\u003c\/p\u003e\n\n\u003cp\u003eFour digit subtraction is the biggest borrowing a third grader meets, and a valentine to trace is what gets five CSI Mini Mystery Detective math cases done in the second half of February. The lineup does the checking, so the marking is student-led and a glance at the key is all you need.\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\u003eBunch of Flowers\u003c\/strong\u003e - left on the teacher's desk overnight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eValentines Day Card\u003c\/strong\u003e - a card with no signature\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eValentines Day Flowers\u003c\/strong\u003e - left for the teacher overnight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLove Songs\u003c\/strong\u003e - somebody is singing love songs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMystery Bouquet\u003c\/strong\u003e - flowers with the label torn off\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, which is 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 single page case your class cracks with math. The suspects stand in a lineup with a number each, the crime sheet produces those numbers, and a correct answer knocks one suspect out until the last name standing is the culprit. There is no kit and nothing to assemble, so what carries it is the arithmetic, which is what makes detective activities land where math worksheets slide off. One case runs a class period.\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 needs far more repetitions than the unit allows, and these five cases supply them in a form third and fourth graders will finish. February gives you a reason to hand it out, and it still works in April when you want the columns automatic before decimals arrive. One wrong borrow names the wrong suspect, so students trace the error back themselves.\u003c\/p\u003e\n\n\u003cp\u003eIt suits 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 full pages on the hardest subtraction third 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, and the answer keys make grading quick\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":61955456237938,"sku":"5148796","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/valentines-day-4-digit-subtraction-with-regrouping-worksheets-5148796.jpg?v=1792461132","url":"https:\/\/kiwilandeducation.com\/products\/4-digit-subtraction-with-regrouping-mystery-detective-worksheets-grades-3-5-valentines-day","provider":"Kiwiland Education","version":"1.0","type":"link"}