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Common CoreCCSS.Math.Content.2.NBT.9CCSS-2010

Explain why addition and subtraction strategies work, using place value and the…

Common Core·math·Grade 2·Bloom: Understand·Last verified: May 21, 2026

Explain why addition and subtraction strategies work, using place value and the properties of operations.

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Addition and subtraction strategies (age 7+) →
Addition & Subtraction · Ages 7–8 · try 3 free questions

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