{"product_id":"2-digit-addition-with-regrouping-math-mystery-worksheets-grades-1-3-valentines-day","title":"2-Digit Addition with Regrouping | Math Mystery Worksheets | Grades 1–3 | Valentine's Day","description":"\u003cp\u003e\u003cstrong\u003e2-digit addition with regrouping turns into a Valentine's Day detective hunt your students will beg to finish.\u003c\/strong\u003e In this no-prep, printable \u003cstrong\u003eMath Mystery\u003c\/strong\u003e, young investigators solve two-digit column addition problems, match each answer to a clue, and eliminate suspects one by one until only the culprit remains. The self-checking format keeps 1st, 2nd, and 3rd graders locked in from the first sum to the last while they build real fluency adding two-digit numbers with regrouping (carrying). Five story-driven Valentine's cases make addition practice feel like a sweetheart whodunit — perfect for math centers, morning work, homework, early finishers, substitute days, indoor recess, spiral review, and Valentine's Day–themed math days.\u003c\/p\u003e\n\n\u003ch3\u003eQuick Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkill:\u003c\/strong\u003e 2-digit addition with regrouping (carrying)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrades:\u003c\/strong\u003e 1–3 (1st, 2nd, 3rd)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e 5 no-prep printable mystery worksheets + full answer keys + a themed congratulations page (PDF)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTheme:\u003c\/strong\u003e Valentine's Day detective adventure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe 5 Mysteries\u003c\/h3\u003e\n\u003cp\u003eEach case is a self-contained addition worksheet where students solve the sums, match answers to clues, and cross off suspects until the mystery is cracked:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlowers for the Teacher\u003c\/strong\u003e — A bunch of flowers has been left for the teacher with no card attached. Solve the sums to reveal who they are from, when, where they were left, and the type of flowers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValentine Songs\u003c\/strong\u003e — A box of chocolates has appeared on the teacher's desk from a secret admirer. Add your way through the clues to discover who, when, their vocal range, and song genre.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUn-named Flowers\u003c\/strong\u003e — A bouquet has arrived for a teacher but the name label has fallen off. Work the addition to figure out which teacher the flowers are for.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMindfulness Practice\u003c\/strong\u003e — Someone has been quietly showing mindfulness in class and no one knows who. Solve each problem to uncover who, when, the mindful act, and their reward.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValentine's Day Card\u003c\/strong\u003e — A card has turned up on a friend's desk from a secret sender. Add to reveal who sent it, when, and its envelope and pen colour.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Teachers Love It\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero prep\u003c\/strong\u003e — just print and hand out; every case is a single self-contained page.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-checking\u003c\/strong\u003e — the suspect-elimination format means students catch their own errors and stay accountable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngagement that lasts\u003c\/strong\u003e — the detective story pulls in even reluctant and struggling mathematicians.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDifferentiation-friendly\u003c\/strong\u003e — use one case at a time or the full set; ideal for mixed-ability classrooms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSkills Covered\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAdding two-digit numbers with regrouping \/ carrying\u003c\/li\u003e\n\u003cli\u003eColumn addition accuracy and place value\u003c\/li\u003e\n\u003cli\u003eFluency and mental-math confidence\u003c\/li\u003e\n\u003cli\u003eLogical reasoning and deductive process of elimination\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e5 print-and-go mystery worksheets (one per case)\u003c\/li\u003e\n\u003cli\u003eFull answer keys for every case\u003c\/li\u003e\n\u003cli\u003eStudent detective instructions\u003c\/li\u003e\n\u003cli\u003eA themed Valentine's Day congratulations page\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eBest Used For\u003c\/h3\u003e\n\u003cp\u003eMath centers and rotations, independent practice, morning work, homework, early finishers, substitute\/relief days, indoor recess, spiral review, test prep, and Valentine's Day–themed math days — any time you want 2-digit addition practice that feels like a game.\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62008105304434,"sku":"5168793","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/2-digit-addition-with-regrouping-math-mystery-valentines-day-cover.jpg?v=1783290521","url":"https:\/\/kiwilandeducation.com\/products\/2-digit-addition-with-regrouping-math-mystery-worksheets-grades-1-3-valentines-day","provider":"Kiwiland Education","version":"1.0","type":"link"}