2-Digit Addition with Regrouping

Name: 2-Digit Addition with Regrouping | Mystery Detective Worksheets | Grades 1–3 | New Year
Brand: Kiwiland Education
SKU: 5136206
Price: 4.0 USD
Availability: InStock

Mystery Detective Worksheets · Grades 1–3 · New Year

Grade 1Grade 2Grade 3Grades 1-3Answer keys included

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Self-checkingEvery right answer clears a suspect. A wrong answer matches nobody.

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Inside the case file

New Years 2 digit addition with regrouping worksheets for 2nd grade and 3rd grade, five January math cases run Mystery Detective style with sixteen sums a page. No prep, print and go, full answer keys and a black and white set: math centers, morning work, early finishers, homework and sub plans for the first week back after Christmas. A party popper goes off early, a gift has no giver and the countdown does not add up, and each correct total crosses a suspect off until one is left, so a carrying slip matches no clue and gets fixed on the page, five CSI Mini Mystery Detective cases that settle a class back into the year without you at the front.

The week a class comes back is the perfect week for a hunt, and a party popper set off early holds everybody on the second of January. Two digit addition with regrouping is the right thing to revisit, and wrapping it in a case buys the attention. It is New Year math with a Mystery Detective to catch, and every page is self-marking.

The Cases

Party Popper - who set it off early
New Year Gift - the gift nobody owns up to
Auld Lang Syne - working out who sang what
New Year Countdown - a count that does not add up
New Year Party - the last case of the night

What's Inside

Five color case pages, sixteen addition problems on each
The same five cases again in black and white
Answer keys for all five cases
A color in page for early finishers
A teacher instruction page, print and go with nothing to prepare
Two digit addition with regrouping throughout

What Is a CSI Mini Mystery Detective?

One printed page holding one crime and the clue list that solves it. Each clue carries a number, the sixteen sums on the page produce those numbers, and a correct total knocks a clue out. Work to the last question and a single suspect is left standing. Get a column wrong and nothing matches, which sends a student back over their working before you ever see it.

When to Use This Resource

Reach for this in the first days back in January, when two digit addition needs keeping warm rather than teaching again. It works as homework over the break, as a January center, and as a set to leave for a substitute. Use it for math centers, morning work, early finishers, homework, sub plans and homeschool lessons, with a whole class, a small group or one student.

Grade Levels

Written for 2nd grade and 3rd grade. Fourth graders who still need regrouping firmed up get good use out of it, and a confident first grader will manage the early cases with support.

Why Teachers Love These Cases

A wrong total matches no clue, so students catch their own slips
Color and black and white are both in the download
A color in page for whoever finishes first
Five cases covers the whole first week back

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