Unit 2, Lesson 6

Use the commutative property to make ten.

EngageNY 60 min(s)
In this lesson, students continue to focus on adding 9 and another single-digit number. In particular, they recognize that either addend can be decomposed in order to make 10 and another number. For example, students add 5 + 9 in two ways: by decomposing 5 to make 4 + 1 + 9 = 4 + 10 = 14, and by decomposing 9 to make 5 + 5 + 4 = 10 + 4 = 14.

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