{"product_id":"addition-subtraction-word-problems-within-1000-mystery-detective-worksheets-grades-2-4","title":"Addition \u0026 Subtraction Word Problems Within 1000 | Mystery Detective Worksheets | Grades 2–4","description":"\u003cp\u003eAddition and subtraction word problems within 1000, three-digit story problems, and school-themed math worksheets for 3rd grade are all included in this no-prep Mini Mystery Detective pack. Students solve their way through a page of word problems, use each answer to cross a suspect off the line-up, and the last suspect standing is the culprit — perfect for math centers, morning work, early finishers, substitute and relief days, homework, small-group intervention, and spiral review. Completely no prep — just print and go.\u003c\/p\u003e\n\n\u003cp\u003eUse it as a 3-digit addition and subtraction review, a problem-solving unit warm-up, a no-prep math sub plan, or a station in your math rotations. Every case mixes joining, separating, part-part-whole and comparing situations — how many altogether, how many are left, how many more and how many fewer — so students practice choosing the operation from the story instead of hunting for key words. It fits 2nd grade extension, 3rd grade core instruction, and 4th grade review or intervention.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eAdding three-digit numbers within 1000 with regrouping: 423 + 250, 359 + 363, 110 + 248\u003c\/li\u003e\n  \u003cli\u003eSubtracting three-digit numbers within 1000 with regrouping: 616 - 346, 833 - 409, 923 - 414\u003c\/li\u003e\n  \u003cli\u003eComparison word problems that ask how many more and how many fewer, the ones students most often add by mistake\u003c\/li\u003e\n  \u003cli\u003eChoosing the operation from the situation rather than from key words, so problem solving transfers to new wording\u003c\/li\u003e\n  \u003cli\u003eReading and interpreting real school situations: library books, lunch orders, sports day points, book fair takings and lost property\u003c\/li\u003e\n  \u003cli\u003eSelf-checking suspect line-ups, so a student who slips knows straight away that something has gone wrong\u003c\/li\u003e\n  \u003cli\u003eFull answer keys in red for every case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFive school mysteries to crack: the missing library books, the muddled lunch line, the changed sports day score, the missing book fair cash, and the raided lost property pile. Answer keys included for every case.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is a Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA no-prep detective activity where students solve math problems to cross off suspects and unmask the culprit. It is like an escape room without the locks — the math has to be right for the elimination to work, so skill practice and critical thinking come in one engaging, self-checking worksheet set.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMath centers and station rotations\u003c\/li\u003e\n  \u003cli\u003eMorning work and bell ringers\u003c\/li\u003e\n  \u003cli\u003eEarly finishers and fast-finisher folders\u003c\/li\u003e\n  \u003cli\u003eSubstitute and relief day plans\u003c\/li\u003e\n  \u003cli\u003eHomework and independent practice\u003c\/li\u003e\n  \u003cli\u003eSmall-group intervention and re-teaching\u003c\/li\u003e\n  \u003cli\u003eSpiral review and test prep\u003c\/li\u003e\n  \u003cli\u003eIndoor recess and end-of-unit rewards\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for 3rd graders working with addition and subtraction within 1000. Also beneficial for struggling 4th and 5th grade students who need extra problem-solving practice, and for advanced 2nd graders ready to move past three-digit computation into word problems.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love Mystery Detectives\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep — print and hand out\u003c\/li\u003e\n  \u003cli\u003eCompletely self-checking, so you are not marking every page to know who is on track\u003c\/li\u003e\n  \u003cli\u003eThe detective hook pulls in reluctant and struggling mathematicians\u003c\/li\u003e\n  \u003cli\u003eReal-world school situations build genuine problem solving, not key-word guessing\u003c\/li\u003e\n  \u003cli\u003eOne page per case makes it easy to assign, differentiate and take in\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more Mystery Detective packs, no-prep 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":62170505019762,"sku":"17212371","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/addition-and-subtraction-word-problems-within-1000-mystery-detective-grade-3-17212371.jpg?v=1792461264","url":"https:\/\/kiwilandeducation.com\/products\/addition-subtraction-word-problems-within-1000-mystery-detective-worksheets-grades-2-4","provider":"Kiwiland Education","version":"1.0","type":"link"}