Unit 2, Lesson 5, Grade 1 icon
Unit 2, Lesson 5

Compare efficiency of counting on and making ten when one addend is 9.

EngageNY 60 min(s)Support for English Language Learners
In this lesson, students examine counting on and making ten as strategies for adding 9 and another single-digit number, and determine that since 10 is a "friendly number

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