Addition and Subtraction Strategies and Explanations

Number and Operation in Base Ten (2.NBT)

B. Use place value understanding and properties of operations to add and subtract

9. Explain why addition and subtraction strategies work, using place value and the properties of operations. (Clarification: Explanations should be supported by drawings or objects.)

We are learning to explain our addition and subtractions strategies we used to help us to get an answer to an equation.

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