{"product_id":"missing-numbers-to-120-before-after-mystery-detective-worksheets-grades-1-2-printable-detective-pack","title":"Missing Numbers to 120 (Before \u0026 After) | Mystery Detective Worksheets | Grades 1–2 | Printable Detective Pack","description":"\u003cp\u003eMissing numbers to 120 worksheets for 1st grade and 2nd grade: five monster math cases, Mystery Detective pages of writing the number before and the number after. No prep, print and go, full answer keys: morning work, math centers, early finishers, homework and sub plans. A classmate who is not what they seem, a principal taken over and a monster thief who has emptied the library carry the cases; each right number crosses a suspect off the list, counting past 100 is the only way through, and a first grader will count all morning to catch the CSI Mini Mystery Detective thief.\u003c\/p\u003e\n\n\u003cp\u003eCounting past 100 is where a first grade class stops being able to do it in their heads, and a monster loose in the school is what gets five pages of practice done. A wrong number matches no suspect, so students see the slip themselves, and one case fits a morning work slot. Five math pages from one Mystery Detective download covers the week.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Student Monster\u003c\/strong\u003e - one of the class is not what they seem\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMonster Principal\u003c\/strong\u003e - the principal has been taken over\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMonster Teacher\u003c\/strong\u003e - and now there is extra homework\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSchool Imposter Among Us\u003c\/strong\u003e - somebody has infiltrated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMonster Thief\u003c\/strong\u003e - all the school books have gone\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive case files on the number before and the number after, to 120\u003c\/li\u003e\n  \u003cli\u003eNumbers run past 100, so the class practices the tricky part\u003c\/li\u003e\n  \u003cli\u003eA suspect list beside the questions, so one answer removes one name\u003c\/li\u003e\n  \u003cli\u003eA red-ink answer key for all five cases\u003c\/li\u003e\n  \u003cli\u003eFive separate monster stories, so no two pages read the same\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective is one printed page with a crime at the top and a lineup of suspects beside the questions. Every suspect carries a number, the answers on the page produce those numbers, and a match takes that name out. The one nobody matched is the culprit. Nothing is cut, laminated or charged, and counting correctly is the only way through.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis belongs in the stretch of first grade where counting to 120 sits in the standards and the class is writing numbers rather than saying them. It is equally useful at the start of second grade as a quick check of what stuck over the summer, and the monster theme makes it an easy pick for October. All the instructions are on the page, so it goes into a sub folder as it is.\u003c\/p\u003e\n\n\u003cp\u003eUse it for morning work, math centers, early finishers, homework, sub plans and homeschool lessons, with a whole class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 1st grade, where counting and writing numbers to 120 sits in the standards. Second graders use it as a start of year check, and kindergarten classes late in the year once they are confident past fifty.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eA miscount matches no suspect, so a child spots it without being told\u003c\/li\u003e\n  \u003cli\u003eNothing to prepare beyond pressing print\u003c\/li\u003e\n  \u003cli\u003eFive short cases covers a week of morning work\u003c\/li\u003e\n  \u003cli\u003eThe monsters carry a class that has gone off number lines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\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-before-and-after-worksheets-1st-grade-8427749.jpg?v=1792461527","url":"https:\/\/kiwilandeducation.com\/products\/missing-numbers-to-120-before-after-mystery-detective-worksheets-grades-1-2-printable-detective-pack","provider":"Kiwiland Education","version":"1.0","type":"link"}