{"product_id":"3-digit-addition-with-regrouping-halloween-mystery-detective-grades-2-4-detective-mystery","title":"3-Digit Addition with Regrouping | Halloween Mystery | Grades 2–4 | Detective Mystery","description":"\u003cp\u003eHalloween 3 digit addition with regrouping worksheets for 2nd grade and 3rd grade: five math sheets, each a Mystery Detective hunt for the same witch among the suspects. Print and go with full answer keys for the two weeks before Halloween, then no prep math centers, early finishers, homework and sub plans. Sixteen problems a sheet laid out in columns, every correct sum crosses one of the teachers, all suspected witches, off the lineup until one is left, so these October pages are real carrying practice, and a CSI Mini Mystery Detective checks itself.\u003c\/p\u003e\n\n\u003cp\u003eOne witch across five CSI Mini Mystery Detective math sheets is why a class comes back for the next page on their own, and by the last sheet they want to know which teacher it is. Because a wrong sum crosses off the wrong teacher, students check their carrying before they commit, and the answer keys make the whole set a five minute mark.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWho Is the Witch?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eOne of the teachers is not what she seems, and the class has to add their way to the truth. Every total points at a suspect and takes that name off the list, and each of the five cases has its own lineup of sixteen teachers and its own witch, so one download gives a class five separate mysteries.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive separate cases, each with its own lineup of sixteen teachers and its own witch\u003c\/li\u003e\n  \u003cli\u003eThree digit addition with regrouping on every sheet\u003c\/li\u003e\n  \u003cli\u003eSixteen problems per sheet, laid out in columns\u003c\/li\u003e\n  \u003cli\u003eEach answer matches one suspect and no other, so the page checks itself\u003c\/li\u003e\n  \u003cli\u003eThe same five cases again in black and white\u003c\/li\u003e\n  \u003cli\u003eA full answer key for every case\u003c\/li\u003e\n  \u003cli\u003eA set of display letters for the classroom wall\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 investigation solved with arithmetic. Each suspect in the lineup carries a number, the crime sheet produces those numbers, and a correct answer takes that suspect out until one name is left. No locks, no app, nothing to assemble, which is why these detective activities get used on days that would otherwise call for math worksheets. Each case fits a class period and works in a center or a sub folder.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eOctober, and the closer to Halloween the better, when three digit carrying still needs practice and the class is past listening. A fresh witch to unmask on each of the five cases keeps students coming back for the next one, which is more than most seasonal worksheets manage. A dropped carry crosses off the wrong teacher, so they check the column themselves rather than handing it in and hoping.\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 whole class, a small group or one child alone.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 2nd grade and 3rd grade, where three digit regrouping sits in the standards. Fourth graders take it as an October refresher, and second graders manage it once two 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\u003eA different witch on each of the five cases, so students want the next page\u003c\/li\u003e\n  \u003cli\u003eA dropped carry takes out the wrong teacher, and students notice\u003c\/li\u003e\n  \u003cli\u003eNo prep in the week of Halloween\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":62005480718706,"sku":"7225582","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/halloween-3-digit-addition-with-regrouping-worksheets-7225582.jpg?v=1792460557","url":"https:\/\/kiwilandeducation.com\/products\/3-digit-addition-with-regrouping-halloween-mystery-detective-grades-2-4-detective-mystery","provider":"Kiwiland Education","version":"1.0","type":"link"}