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This digital lesson and activities will help your students master two digit addition and subtraction, with and without regrouping. Using Base 10 Blocks is a perfect way to help students visualize equations and the strategies to solve them.

Includes detailed notes and visuals for adding and subtracting 2-digit whole numbers using the standard method, as well as using Base Ten Blocks.

Student Practice/ Activities:

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1. Students will drag the base 10 blocks to build the numbers, then find the sum or difference. (NO REGROUPING)

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2. Students will drag the base 10 blocks to build the numbers, then find the sum. (REGROUPING)

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3. Students will drag the base 10 blocks to build the numbers, then find the difference. (REGROUPING)

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4. Students find the sum or difference, using the colored boxes and highlighter strips for correct number placement. There are boxes for regrouping or borrowing. Not all problems require regrouping, so students will have to decide whether they need to regroup or not.

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5. Students will find the sum or difference, then drag & drop the numbers to build their answer.

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6. Students will solve one step word problems involving addition and subtraction.

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