{"product_id":"adding-subtracting-integers-csi-mystery-bank-heist","title":"Adding \u0026 Subtracting Integers CSI Mystery Worksheets | Grades 6–8 | The Bank Heist","description":"\u003cp\u003eAdding and subtracting integers worksheets, positive and negative numbers practice, and integer addition and subtraction activities for 6th grade, 7th grade and 8th grade math are all included in this CSI Mystery Detective — a no-prep math activity. Students work through integer problems - adding a negative, subtracting a negative, and answers that land either side of zero - to eliminate suspects and work out which cash bag was taken from the bank vault. Perfect for middle school math centers, spiral review, test prep, sub days and independent practice, and completely no prep - just print and go.\u003c\/p\u003e\n\u003cp\u003eEvery clue is built on integer addition and subtraction, so students get negative number practice, sign work, and answers on both sides of zero woven through one story. A cash bag has gone from a bank vault that stayed locked all weekend, and only the math will say which one.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAdding integers with unlike signs, where the answer can land either side of zero: -13 + 4, -25 + 6\u003c\/li\u003e\n  \u003cli\u003eSubtracting a larger number from a smaller one so the answer goes negative: 26 - 40, 30 - 45\u003c\/li\u003e\n  \u003cli\u003eSubtracting a negative and recognizing it as adding: 19 - (-2), 6 - (-37)\u003c\/li\u003e\n  \u003cli\u003eAdding a negative and recognizing it as subtracting: 45 + (-8), 17 + (-4)\u003c\/li\u003e\n  \u003cli\u003eJudging whether a given answer is correct, and catching the sign error when it is not\u003c\/li\u003e\n  \u003cli\u003eWorking a running chain of additions and subtractions that crosses zero again and again\u003c\/li\u003e\n  \u003cli\u003eMatching integer problems to their answers and tracing a route through a number maze\u003c\/li\u003e\n  \u003cli\u003eComplete answer keys\u003c\/li\u003e\n  \u003cli\u003eFull color and ink-saving black and white versions of every page\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOne full-length case to crack, with every clue building on the last.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is a CSI Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA CSI Mystery Detective is a print-and-solve math activity - like an escape room without the locks. Students work through math problems to collect evidence, eliminate suspects, and reveal who did it. It combines real skill practice with critical thinking and a detective hook that keeps the whole class engaged.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis integers CSI Mystery Detective can be used any time you are teaching or revisiting positive and negative numbers. Teachers love it for:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIntroducing or consolidating an integers unit\u003c\/li\u003e\n  \u003cli\u003eMiddle school math centers and small group rotations\u003c\/li\u003e\n  \u003cli\u003eWarm-ups, morning work and early finishers\u003c\/li\u003e\n  \u003cli\u003eSubstitute teacher plans\u003c\/li\u003e\n  \u003cli\u003eInteger review before state testing\u003c\/li\u003e\n  \u003cli\u003eHomework and end-of-unit spiral practice\u003c\/li\u003e\n  \u003cli\u003eWhole-class challenge days and enrichment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned for 6th grade, 7th grade and 8th grade integer work. Also beneficial for 9th graders who still need confidence with negative numbers before algebra, and advanced 5th graders ready for a challenge.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective packs\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFeels like a math escape room, with no locks and no technology required\u003c\/li\u003e\n  \u003cli\u003eThe detective storyline keeps students working through problem after problem\u003c\/li\u003e\n  \u003cli\u003eEasy prep - simply print and go\u003c\/li\u003e\n  \u003cli\u003eThe pages check themselves - a wrong answer stops the mystery in its tracks, so students find their own mistake before it ever reaches your marking pile\u003c\/li\u003e\n  \u003cli\u003eWorks for independent practice, partners, small groups or a whole class challenge\u003c\/li\u003e\n  \u003cli\u003eBuilds integer fluency, reasoning and problem solving together\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mystery Detective packs, integer and middle school math activities, and detective-themed stories for the classroom.\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":62265122193778,"sku":"17508640","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/adding-and-subtracting-integers-worksheets-positive-negative-numbers-mystery-detective-bank-heist-17508640.jpg?v=1792459155","url":"https:\/\/kiwilandeducation.com\/products\/adding-subtracting-integers-csi-mystery-bank-heist","provider":"Kiwiland Education","version":"1.0","type":"link"}