Unit 9 - Lesson 8 - Grade 2: Illustrative Mathematics
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Grade 2 Unit 9
Lesson 8: Add and Subtract Within 100
CC BY 2021 Illustrative Mathematics®
Grade 2 Unit 9
Lesson 8: Add and Subtract Within 100
CC BY 2021 Illustrative Mathematics®
Lesson: Add and Subtract Within 100
Find the value of each expression mentally.
9 + 5
9 + 5
20 + 30
20 + 30
29 + 35
29 + 35
229 + 435
229 + 435
Write an equation that shows the value you found for each round you play.
Round 1:
Round 1:
Round 2:
Round 2:
Round 3:
Round 3:
Five in a Row
Target Numbers
Cool Down: Practice for Fluency
How have you improved with adding and subtracting within 100?
How have you improved with adding and subtracting within 100?
What do you still want to work on?
What do you still want to work on?