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Unit 9 - Lesson 8 - Grade 2: Illustrative Mathematics
By Formative Library
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Instructions
Lesson: Add and Subtract Within 100
Cool Down: Practice for Fluency
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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®
Number Talk: Add by Place (Warm Up)
Find the value of each expression mentally.
1
Question 1
1.
9 + 5
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Question 2
2.
20 + 30
1
Question 3
3.
29 + 35
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Heads Up, Add and Subtract within 100
Write an equation that shows the value you found for each round you play.
1
Question 5
5.
Round 1:
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Question 6
6.
Round 2:
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Question 7
7.
Round 3:
Centers: Choice Time
Five in a Row
Target Numbers
Question 8
8.
How have you improved with adding and subtracting within 100?
Question 9
9.
What do you still want to work on?
Question 4
4.
229 + 435
