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Domain Operations and Algebraic Thinking
Grade 1

1.OA

Grade 1—Operations and Algebraic Thinking

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Clusters

1.OA.A Represent and solve problems involving addition and subtraction.
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1.OA.B Understand and apply properties of operations and the relationship between addition and...
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1.OA.C Add and subtract within 20.
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1.OA.D Work with addition and subtraction equations.
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