Unit 1, Lesson 35

Relate subtraction facts involving fives and doubles to corresponding decompositions.

EngageNY 60 min(s)
In this lesson, students apply their knowledge of doubles and fives to subtraction. For example, when presented with 8 - 5, students learn to think of the decomposition of 8 ("I know that 5 and 3 makes 8.") and apply that understanding to help them solve subtraction problems ("So 8 - 5 must be 3.").

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