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1st Grade Common Core: 1.OA.2a

Common Core Identifier: 1.OA.2a / Grade: 1
Curriculum: Operations And Algebraic Thinking: Represent And Solve Problems Involving Addition And Subtraction.
Detail: Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.
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