If you are viewing this product, then you probably already know of the usefulness and versatility of task cards. They work great for centers, partner activities, and general review. Kids love them because they can move around and work at their own pace, too.

This task cards set includes:

• 30 task cards for subtraction with regrouping (color).
• 30 task cards for subtraction with regrouping (low ink version).
• 1 answer document with blank squares
• 1 answer document with problems given
• 1 answer key

My students absolutely loved the opportunity to check their own work using QR codes with this activity. Students simply scan the code with a QR reader app on a mobile device with a camera such as a phone, tablet, or laptop. When they do the correct answer magically appears! Answers even have the proper regrouping shown to help them more quickly identify any errors. The best part is that while students self-check you are freed to help students who need it.

If you like these task cards be sure to check out my other QR Code products.

If you need more practice with addition and subtraction of greater numbers, check out these products:

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★Task Cards for Addition of Multi-Digit Numbers 4.NBT.B.4

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★Addition and Subtraction Using Picture Models - with unique 4x4 answer document!