{"product_id":"missing-numbers-to-120-before-after-math-mystery-worksheets-grades-1-2-printable-detective-pack","title":"Missing Numbers to 120 (Before \u0026 After) | Math Mystery Worksheets | Grades 1–2 | Printable Detective Pack","description":"\u003cp\u003eTurn number sense practice into a mystery to solve. In this printable set of \u003cstrong\u003eMissing Numbers to 120 Math Mysteries\u003c\/strong\u003e, students crack five cases by filling in the missing numbers that come before and after to 120, then using their answers to eliminate clues and suspects. Built for \u003cstrong\u003eGrades 1–2 classroom teachers, homeschool parents, and tutors\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eYou get \u003cstrong\u003efive one-page mysteries\u003c\/strong\u003e in a single download — ready for centers, early finishers, or review. On each page a short story sets the scene, students work through the missing-number problems, then use their answers to eliminate options until the case is solved. No apps, no prep, no fuss.\u003c\/p\u003e\n\u003ch3\u003eQuick Details\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eGrade Levels:\u003c\/strong\u003e Grades 1–2\u003cbr\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Printable PDF\u003cbr\u003e\n\u003cstrong\u003eResource Type:\u003c\/strong\u003e Math Mystery worksheets\u003cbr\u003e\n\u003cstrong\u003eTheme:\u003c\/strong\u003e Detective\u003cbr\u003e\n\u003cstrong\u003eMath Skills:\u003c\/strong\u003e Finding the missing number before and after, to 120\u003cbr\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e Aligns with Common Core 1.NBT.A.1\u003cbr\u003e\n\u003cstrong\u003ePages:\u003c\/strong\u003e 16 pages including answer keys\u003cbr\u003e\n\u003cstrong\u003eBest For:\u003c\/strong\u003e Math centers, warm-ups, morning work, spiral review, sub plans, early finishers, test prep, and homeschool math\u003cbr\u003e\n\u003cstrong\u003eTech Needed:\u003c\/strong\u003e None — no apps, locks, passwords, or student logins required\u003c\/p\u003e\n\u003ch3\u003eHow the Mystery Works\u003c\/h3\u003e\n\u003cp\u003eEach one-page mystery uses the same engaging detective premise. Students:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRead the short story at the top of the page\u003c\/li\u003e\n\u003cli\u003eFill in the missing numbers before and after\u003c\/li\u003e\n\u003cli\u003eUse their answers to cross suspects and clues off the list\u003c\/li\u003e\n\u003cli\u003eCrack the case once only the correct answer remains\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTeacher Wins\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo grading needed\u003c\/strong\u003e — a complete answer key is included for every mystery\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-checking\u003c\/strong\u003e — students need accurate answers to eliminate the right options\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo prep, no tech\u003c\/strong\u003e — just print and hand out\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorks independently\u003c\/strong\u003e — solo, with a partner, or in small groups\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne page per case\u003c\/strong\u003e — each mystery fits a single class session\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSkills Covered\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFinding the number before and after\u003c\/li\u003e\n\u003cli\u003eCounting and number order to 120\u003c\/li\u003e\n\u003cli\u003ePlace value and number sense\u003c\/li\u003e\n\u003cli\u003eUsing answers to eliminate suspects and clues\u003c\/li\u003e\n\u003cli\u003eLogic, reasoning, and checking work for accuracy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFive one-page Math Mysteries (missing numbers to 120, before and after)\u003c\/li\u003e\n\u003cli\u003eAn answer key for every mystery\u003c\/li\u003e\n\u003cli\u003eA print-and-go teacher instruction page\u003c\/li\u003e\n\u003cli\u003eEverything in printable PDF format\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBest Used For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMath centers and early finishers\u003c\/li\u003e\n\u003cli\u003eMorning work, warm-ups, and spiral review\u003c\/li\u003e\n\u003cli\u003eSubstitute teacher plans and homework\u003c\/li\u003e\n\u003cli\u003eTest prep and intervention groups\u003c\/li\u003e\n\u003cli\u003eSmall groups and independent work\u003c\/li\u003e\n\u003cli\u003eHomeschool math\u003c\/li\u003e\n\u003cli\u003eNumber sense practice and reinforcement\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955606872434,"sku":"8427749","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/missing-numbers-to-120-math-mystery-1.jpg?v=1781856590","url":"https:\/\/kiwilandeducation.com\/products\/missing-numbers-to-120-before-after-math-mystery-worksheets-grades-1-2-printable-detective-pack","provider":"Kiwiland Education","version":"1.0","type":"link"}