Addition and Subtraction with Regrouping Activities - Math Mystery


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  • Product Description
  • Standards

Who stole the class pet, Mr. Fluffins? Find out in this math mystery! This activity pack includes 4 hands-on, interactive math review activities to help reinforce and review addition and subtraction with regrouping.

These addition and subtraction with regrouping activities are low prep and designed to meet 2nd grade standards, but can easily be adapted for 1st or 3rd grade. Can be used in small groups, whole group, or individually as centers!


  • 7 sets of clues leading students to each activity
  • 4 hands-on addition & subtraction regrouping activities

All math review units include thorough instructions for set up and answer keys when applicable. If you're feeling creative, math reviews make GREAT room transformations! Please share any pictures with me via Instagram - @theaverageteacher.

If you like this resource, please be sure to leave feedback to receive credit for future purchases! Make sure you never miss a new product by following my store and social media - @theaverageteacher.

to see state-specific standards (only available in the US).
Fluently add and subtract multi-digit whole numbers using the standard algorithm.
Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.
Explain why addition and subtraction strategies work, using place value and the properties of operations.
Mentally add 10 or 100 to a given number 100–900, and mentally subtract 10 or 100 from a given number 100–900.
Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.
Total Pages
48 pages
Answer Key
Teaching Duration
1 hour
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