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This task builds on that knowledge by asking them to study more carefully the make-a-ten strategy that they should already know and use intuitively. Aligns with CCSS.Math.Content.3.OA.D.9 Identify arithmetic patterns, and explain them using properties of operations.
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3.oa.d.9, cc by-nc-sa 4.0, ccss.math.content.3.oa.d.9, ccss.math.content.3.oa.d.9 identify arithmetic patterns, and explain them using properties of operations., creative commons attribution-noncommercial-sharealike 4.0, identify arithmetic patterns, and explain them using properties of operations., illustrative mathematics, illustrative mathematics: 3.oa making a ten, illustrative mathematics: 3.oa making a ten ccss.math.content.3.oa.d.9, making a ten ccss.math.content.3.oa.d.9
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