{"product_id":"2-digit-addition-with-regrouping-math-mystery-worksheets-grades-1-3-christmas-theme","title":"2-Digit Addition with Regrouping | Math Mystery Worksheets | Grades 1–3 | Christmas Theme","description":"\u003cp\u003eTurn addition practice into a Christmas mystery to solve. In this printable set of \u003cstrong\u003eChristmas 2-Digit Addition Math Mysteries\u003c\/strong\u003e, students crack five festive cases by solving 2-digit addition problems with regrouping and using their answers to eliminate clues and suspects. Built for \u003cstrong\u003eGrades 1–3 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 2-digit addition problems (all with regrouping), 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 1–3 (mostly used with 2nd)\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 Christmas\u003cbr\u003e\n\u003cstrong\u003eMath Skills:\u003c\/strong\u003e 2-digit addition with regrouping\u003cbr\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e Aligns with Common Core 1.NBT.C.4 and 2.NBT.B.5\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 festive 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\u003eSolve the 2-digit addition problems (with regrouping)\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\u003e2-digit addition with regrouping\u003c\/li\u003e\n\u003cli\u003eRegrouping ones into tens\u003c\/li\u003e\n\u003cli\u003eAdding two-digit numbers accurately\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 (2-digit addition with regrouping)\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\u003eChristmas and holiday math activities\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61955548119410,"sku":"5036015","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/christmas-2-digit-addition-math-mystery-1.jpg?v=1781855046","url":"https:\/\/kiwilandeducation.com\/products\/2-digit-addition-with-regrouping-math-mystery-worksheets-grades-1-3-christmas-theme","provider":"Kiwiland Education","version":"1.0","type":"link"}