Unit 7 - Lesson 17 - Grade 2: Illustrative Mathematics

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Note from the author:
Grade 2 Unit 7
Lesson 17: Center Day 3
CC BY 2021 Illustrative MathematicsĀ®
Grade 2 Unit 7
Lesson 17: Center Day 3
CC BY 2021 Illustrative MathematicsĀ®
Lesson: Center Day 3

Number Talk: Simplify It (Warm Up)

Find the value of each expression mentally.
1.

34 - 9

2.

434 - 99

3.

367 - 98

4.

635 - 298

More Target Numbers and Choice Time

Target Numbers

Five in a Row: Addition and Subtraction

How Close?