{"product_id":"adding-3-numbers-with-regrouping-2-digit-addends-mini-math-mystery-worksheets-grades-2-3-detective","title":"Adding 3 Numbers with Regrouping (2-Digit Addends) | Mini Math Mystery Worksheets | Grades 2–3 | Detective","description":"\u003cp\u003e\u003cstrong\u003eAdding three 2-digit numbers with regrouping is the case to crack when a phone goes missing, a mystery gift appears on the teacher's desk, and someone has been quietly doing good deeds.\u003c\/strong\u003e In this no-prep, printable \u003cstrong\u003eMini Math Mystery\u003c\/strong\u003e, students become private detectives who add three 2-digit numbers with regrouping, match each sum to a clue, and eliminate options until every detail of the case is revealed. The self-checking, story-driven format builds real column-addition fluency while keeping 2nd and 3rd graders engaged — ideal for math centers, morning work, homework, early finishers, substitute\/relief days, indoor recess, and spiral review.\u003c\/p\u003e\u003ch3\u003eQuick Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkill:\u003c\/strong\u003e Adding three 2-digit numbers with regrouping (3 addends)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrades:\u003c\/strong\u003e 2–3 (2nd, 3rd)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e 5 no-prep printable mystery worksheets in full color and black \u0026amp; white + clue lists + full answer keys (PDF)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTheme:\u003c\/strong\u003e Mini Math Mystery detective adventure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe 5 Mysteries\u003c\/h3\u003e\u003cp\u003eEach case is a multi-clue mystery: students add the three numbers, match answers to the clues, and eliminate options to reveal several details at once:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShowing Mindfulness\u003c\/strong\u003e — Someone has been doing random acts of kindness around the school. Add to reveal who it is, when, their act of kindness, and their reward.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Missing Phone\u003c\/strong\u003e — A phone has gone missing. Solve the sums to work out who took it, when, where, and which phone it was.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Teacher's Lunch\u003c\/strong\u003e — The teacher's lunch has disappeared. Add your way through the clues to find who took it, when, where from, and what it was.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinding Rubbish\u003c\/strong\u003e — A teacher spotted a student quietly picking up litter. Work out who the student is, when, where, and the type of rubbish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGift for the Teacher\u003c\/strong\u003e — A mystery student has bought the teacher a present. Solve the problems to reveal who it is.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Teachers Love It\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero prep\u003c\/strong\u003e — just print and hand out; a print-friendly black \u0026amp; white version is included too.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-checking\u003c\/strong\u003e — the elimination format means students catch their own mistakes and stay accountable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngagement that lasts\u003c\/strong\u003e — the multi-clue detective story pulls in even reluctant and struggling students.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDifferentiation-friendly\u003c\/strong\u003e — assign one case at a time or the full set; ideal for mixed-ability classrooms.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSkills Covered\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAdding three 2-digit numbers with regrouping (column addition)\u003c\/li\u003e\n\u003cli\u003ePlace value and carrying across columns\u003c\/li\u003e\n\u003cli\u003eAddition fact fluency and accuracy\u003c\/li\u003e\n\u003cli\u003eLogical reasoning and deductive process of elimination\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e5 print-and-go mystery worksheets (one per case), in full color and black \u0026amp; white\u003c\/li\u003e\n\u003cli\u003eMatching clue lists for every case\u003c\/li\u003e\n\u003cli\u003eFull answer keys\u003c\/li\u003e\n\u003cli\u003eStudent detective instructions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBest Used For\u003c\/h3\u003e\u003cp\u003eMath centers and rotations, independent practice, morning work, homework, early finishers, substitute\/relief days, indoor recess, spiral review, and test prep — any time you want adding three 2-digit numbers practice that feels like a game.\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62005430354290,"sku":"5162885","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/adding-3-numbers-2-digit-regrouping-mini-math-mystery-detective-cover.jpg?v=1783218384","url":"https:\/\/kiwilandeducation.com\/products\/adding-3-numbers-with-regrouping-2-digit-addends-mini-math-mystery-worksheets-grades-2-3-detective","provider":"Kiwiland Education","version":"1.0","type":"link"}