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®
Find the value of each expression mentally.
9 + 5
20 + 30
29 + 35
229 + 435
Write an equation that shows the value you found for each round you play.
Round 1:
Round 2:
Round 3:
How have you improved with adding and subtracting within 100?
What do you still want to work on?
