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Unit 2 - Lesson 9 - Grade 2: Illustrative Mathematics

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Grade 2 Unit 2

Lesson 9: Add and Subtract Within 100

CC BY 2021 Illustrative Mathematics

Grade 2 Unit 2

Lesson 9: Add and Subtract Within 100

CC BY 2021 Illustrative Mathematics

Lesson: Add and Subtract Within 100

Which One Doesn’t Belong: Tens and Ones (Warm Up)

Sort and Find the Value

Add or Subtract

Find the value of each expression. Show your thinking. Use blocks if it helps.

1
1
1
1
Cool Down: Find the Value Your Way

Find the value of each expression. Show your thinking. Use blocks if it helps.

1
1

1
Pitanje 1
1.

Which one doesn’t belong?

Match each expression to a base-ten diagram.

1
Pitanje 2
2.

Choose 1 addition expression and find the value of the sum.

1
Pitanje 3
3.

Choose 1 subtraction expression and find the value of the difference.

Pitanje 4
4.

Pitanje 5
5.

Pitanje 6
6.

Pitanje 7
7.

Pitanje 8
8.

Pitanje 9
9.