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Common Core MATH 1 OA 4 Grade 1 Operations And Algebraic Thinking Understand And Apply Properties Of Operations And The Relationship Between Addition And Subtraction

Operations And Algebraic Thinking: Understand And Apply Properties Of Operations And The Relationship Between Addition And Subtraction.

Understand subtraction as an unknown-addend problem. For example, subtract 10 - 8 by finding the number that makes 10 when added to 8.

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