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Common Core MATH 1 OA 8 Grade 1 Operations And Algebraic Thinking Work With Addition And Subtraction EquationsOperations And Algebraic Thinking: Work With Addition And Subtraction Equations.
Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = ? - 3, 6 + 6 = ?.Click on the link to view all available worksheets related to the concept.