3.OA.D.9

6b9cbaef-d7cc-11e8-824f-0242ac160002 6b9e9d1d-d7cc-11e8-824f-0242ac160002 6b9b1a1b-d7cc-11e8-824f-0242ac160002 3.OA.D 3.OA.D.9

Identify arithmetic patterns (including patterns in the addition table or multiplication table), and explain them using properties of operations. <em>For example, observe that 4 times a number is always even, and explain why 4 times a number can be decomposed into two equal addends.</em>

Propose a mapping

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