5, Lesson 20, Unit 1, Grade 1, EngageNY icon
Problem Set

Problem Set

Lesson 20. Unit 1. Grade 1 EngageNY

EngageNY10 min(s)

This Problem Set is a part of the Lesson 20, Unit 1, Grade 1. In this lesson, students apply their understanding of the commutative property by starting with a larger quantity and counting on as a way to add efficiently. For example, when adding 2 + 7, students realize they can simply count on 2 from 7, rather than counting on 7 from 2.

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