{"product_id":"early-finishers-2-digit-addition-math-mystery-worksheets-grades-1-3-18-cases","title":"Early Finishers 2-Digit Addition | Math Mystery Worksheets | Grades 1–3 | 18 Cases","description":"\u003cp\u003e\u003cstrong\u003eEighteen one-page cases for the child who finishes first and asks what to do now\u003c\/strong\u003e — students work the 2-digit addition problems, match each answer to a suspect, and cross suspects off until one is left standing. Every case is self-checking and completely independent of the others, so a student can pick one up cold. Eighteen is most of a term of fast-finisher work from a single print run.\u003c\/p\u003e\n\n\u003ch3\u003eQuick Details\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill:\u003c\/strong\u003e 2-digit addition with regrouping · \u003cstrong\u003eGrades:\u003c\/strong\u003e 1–3 · \u003cstrong\u003eFormat:\u003c\/strong\u003e 18 mysteries + full answer keys (printable PDF) · \u003cstrong\u003eTheme:\u003c\/strong\u003e Around the school\u003c\/p\u003e\n\n\u003ch3\u003eThe 18 Mysteries\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThe Missing Book\u003c\/strong\u003e — The last copy of the class reader is gone five minutes before silent reading.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Vanished Ropes\u003c\/strong\u003e — Every skipping rope has gone on the morning of the skipping challenge.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Stolen Apples\u003c\/strong\u003e — The fruit basket disappears before morning break has even started.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Missing Boots\u003c\/strong\u003e — The garden club is due outside in ten minutes and every pair of boots has gone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Stolen Cupcakes\u003c\/strong\u003e — Two trays vanish twenty minutes before the bake sale opens.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Stolen Umbrellas\u003c\/strong\u003e — The lost property bin is empty on the wettest afternoon of the term.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Missing Scissors\u003c\/strong\u003e — The craft cupboard is bare the morning the whole grade makes paper lanterns.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Vanished Camera\u003c\/strong\u003e — Gone from its case an hour before the class photo.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Stolen Life Ring\u003c\/strong\u003e — Off its hook by the pool, and the swimming lesson cannot start.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Missing Helmet\u003c\/strong\u003e — Off the rack at the gate, with the cycling group leaving after lunch.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Vanished Bin\u003c\/strong\u003e — The recycling bin disappears on weekly count day.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Stolen Coin Bank\u003c\/strong\u003e — Gone the day before the fundraiser money is due at the bank.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Missing Robot\u003c\/strong\u003e — Off the workbench two days before the district challenge.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Stolen Soup Pot\u003c\/strong\u003e — Gone an hour before four hundred lunches are served.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Stolen Telescope\u003c\/strong\u003e — Taken on the clearest night of the whole year.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Missing Fossil\u003c\/strong\u003e — Out of the display case with three classes about to walk through.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Vanished Trophy\u003c\/strong\u003e — Gone the week before it is due to be handed over.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Missing Mower\u003c\/strong\u003e — Gone the day before the field has to be cut for sports day.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Teachers Love It\u003c\/h3\u003e\n\u003cp\u003eEighteen cases is the difference between a fast-finisher activity that runs out in a fortnight and one that lasts. Because each page is self-checking, a student can start, finish and know they were right without interrupting the group you are teaching — and the detective hook makes it read as a reward rather than more work.\u003c\/p\u003e\n\n\u003ch3\u003eSkills Covered\u003c\/h3\u003e\n\u003cp\u003e2-digit addition with and without regrouping — plus logical reasoning and deductive elimination as students rule suspects out clue by clue.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cp\u003ePrintable one-page mystery worksheets, suspect line-ups, complete answer keys with the villain marked, and student instructions — all in one PDF.\u003c\/p\u003e\n\n\u003ch3\u003eBest Used For\u003c\/h3\u003e\n\u003cp\u003eEarly finishers and fast finishers, morning work, math centers, homework, substitute\/relief days, indoor recess, spiral review, and test prep for grades 1–3.\u003c\/p\u003e\n\n\u003ch3\u003eMore From This Line\u003c\/h3\u003e\n\u003cp\u003eBrowse every \u003ca href=\"\/collections\/math-mystery\"\u003eMath Mystery pack\u003c\/a\u003e, or stock the tray with \u003ca href=\"\/products\/early-finishers-multiplication-math-mystery-worksheets-grades-3-5-12-cases\"\u003eEarly Finishers Multiplication\u003c\/a\u003e and \u003ca href=\"\/products\/2-digit-addition-with-regrouping-math-mystery-worksheets-grades-2-3-pirate-theme\"\u003e2-Digit Addition Pirate Mystery\u003c\/a\u003e.\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62264568283506,"sku":"17483477","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/two-digit-addition-with-regrouping-math-mystery-worksheets-im-done-now-what.jpg?v=1788137195","url":"https:\/\/kiwilandeducation.com\/products\/early-finishers-2-digit-addition-math-mystery-worksheets-grades-1-3-18-cases","provider":"Kiwiland Education","version":"1.0","type":"link"}