1.OA.D.8

6b9cbaef-d7cc-11e8-824f-0242ac160002 6b9ccf1c-d7cc-11e8-824f-0242ac160002 6b9b1433-d7cc-11e8-824f-0242ac160002 1.OA.D 1.OA.D.8

Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. <em>For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = _ - 3, 6 + 6 = _.</em>

Propose a mapping

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