Unit 4, Lesson 15

Use single-digit sums to support solutions for analogous sums to 40.

EngageNY 60 min(s)
This lesson helps students notice the ways in which smaller addition problems can help with larger ones. For example, students add 8 + 4, 18 + 4, and 28 + 4 and notice that 8 + 4 is embedded in all three problems.

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