{"product_id":"halloween-mystery-detective-3-digit-addition-subtraction","title":"3-Digit Addition \u0026 Subtraction | Mystery Detective Worksheets | Grades 2–5 | Halloween","description":"\u003cp\u003eHalloween 3 digit addition and subtraction worksheets for 2nd grade and 3rd grade: five Halloween math cases, each a Mystery Detective page with carrying and borrowing across the columns. Print and go with full answer keys, no prep, for October morning work, math centers, early finishers, homework and sub plans. Halloween math for 2nd grade and 3rd grade with 3 digit addition and subtraction with regrouping on the same page, so both skills get a workout in the week of the costume parade. It is October math for math centers, morning work or homework, and every CSI Mini Mystery Detective page is self-marking.\u003c\/p\u003e\n\n\u003cp\u003eA witch has turned the teacher into a toad, and that is enough to get a second grade class through mixed addition and subtraction with regrouping in the week of the costume parade. All five sheets are self-marking. Each CSI Mini Mystery Detective math case fits a morning work slot.\u003c\/p\u003e\n\u003cp\u003eA witch has turned the teacher into a toad and a classmate into a cat, and nobody knows who's under the costume. Students add or subtract each problem, then cross off the matching clue. The page mixes both operations, so they have to watch the sign.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTeacher Toad\u003c\/strong\u003e - the teacher turned into a toad\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrick or Treat Teacher\u003c\/strong\u003e - who surprised the teacher\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCat Friend\u003c\/strong\u003e - a friend turned into a cat\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnder the Costume\u003c\/strong\u003e - who is in the costume\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCostume Competition\u003c\/strong\u003e - who won the competition\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFive Halloween cases\u003c\/li\u003e\n  \u003cli\u003e3 digit addition and subtraction with regrouping\u003c\/li\u003e\n  \u003cli\u003eBlack and white copies\u003c\/li\u003e\n  \u003cli\u003eAnswer keys\u003c\/li\u003e\n  \u003cli\u003eTeacher instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach case is one page with a Halloween story, the problems and clue lists. Clues have numbers. Students cross off the ones that match, and what's left solves the case.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUse these in October, around Halloween. They also work as mixed addition and subtraction review later in the year. Teachers use them as homework, with small groups, on sub days and at class parties.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWritten for 2nd grade and 3rd grade. 3rd graders can use it as October review.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHalloween stories kids will like\u003c\/li\u003e\n  \u003cli\u003eAddition and subtraction together\u003c\/li\u003e\n  \u003cli\u003ePrint and go\u003c\/li\u003e\n  \u003cli\u003eFive separate cases\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWant more cases like these?\u003c\/strong\u003e\u003c\/p\u003e\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\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":52291164995954,"sku":"4938843","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-and-subtraction-worksheets-2nd-3rd-grade-4938843.jpg?v=1792462234","url":"https:\/\/kiwilandeducation.com\/products\/halloween-mystery-detective-3-digit-addition-subtraction","provider":"Kiwiland Education","version":"1.0","type":"link"}