2-Digit Addition with Regrouping

Name: 2-Digit Addition with Regrouping | Mystery Detective Worksheets | Grades 1–4 | Printable Detective Pack
Brand: Kiwiland Education
SKU: 4912078
Price: 4.0 USD
Availability: InStock

Mystery Detective Worksheets · Grades 1–4 · Printable Detective Pack

2nd grade mathGrade 1Grade 2Grade 3Grade 4Answer 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

2 digit addition with regrouping math activities for 1st grade and 2nd grade: five math cases, each a Mystery Detective page, carrying from the ones into the tens. Print and go with full answer keys: no prep math worksheets for morning work, math centers, early finishers, homework and sub plans. Two digit addition with regrouping for 1st grade and 2nd grade, set around school so it works in any month, and short enough for a young class to finish. It suits math centers, morning work and early finishers, and it prints and goes as five CSI Mini Mystery Detective cases.

Carrying is the step a young class needs the most practice at, and a teacher who is nowhere in the school is what keeps them happily at it for five pages. Students match each total to a suspect and cross that name off, which means they are checking their own carrying as they go. One case fills a morning work slot, and every CSI Mini Mystery Detective math sheet marks itself.

Students add each pair of numbers, carrying from the ones to the tens, then look for the total in the clue lists. A neighbor's missing phone, a teacher who hasn't turned up and a mystery reward are three of the cases. A child who finishes with one clue in each list has got the carrying right.

The Cases

The Missing Phone - a neighbor's phone has been taken
The Teachers Lunch - the teacher's lunch is gone
The Missing Teacher - where a teacher has gone
Who Got in Trouble - which student was in trouble
The Mystery Reward - who did the great work

What's Inside

Five cases of 2 digit addition with regrouping
Clue lists down the side of each page
Black and white copies
Answer keys
Teacher instructions

What Is a CSI Mini Mystery Detective?

Each case is one page with a short story, some addition problems and clue lists for who, where and when. Every clue has a number. When an answer matches, the clue gets crossed off, and the ones still standing at the end solve the case.

When to Use This Resource

These fit once carrying has been taught and your class is practicing on its own. 2nd graders can use them as review before 3 digit addition. Hand them out in a math center, send them home, or use them in homeschool.

Grade Levels

Written for 1st grade and 2nd grade, once carrying has been introduced.

Why Teachers Love These Cases

Every problem needs regrouping
School stories kids recognize
Print and go
Students can see when a total doesn't match

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