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Unit 7 - Lesson 9 - Grade 2: Illustrative Mathematics

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Last updated 11 months ago
11 questions
Note from the author:
Grade 2 Unit 7
Lesson 9: Add Three-digit Numbers
CC BY 2021 Illustrative Mathematics®
Grade 2 Unit 7
Lesson 9: Add Three-digit Numbers
CC BY 2021 Illustrative Mathematics®
Lesson: Add Three-digit Numbers
Cool Down: Find the Sum

Number Talk: Ten and Some More (Warm Up)

Find the value of each expression mentally.
1
Question 1
1.

528 + 2

1
Question 2
2.

528 + 7

1
Question 3
3.

487 + 3

1
Question 4
4.

487 + 8

How Did You Add Three-digit Numbers?

Find the value of each expression. Show your thinking.
1
Question 5
5.

384 + 409

1
Question 6
6.

757 + 152

1
1

Analyze and Add

Noah and Kiran showed how they found the value of 267 + 338.

1
Question 9
9.

How is Noah and Kiran’s work the same? How is it different?

1
Question 10
10.

Which student found the correct value? Explain or show your thinking.

Priya used a diagram to find the value of 565 + 247.

1
Question 11
11.

Did she find the correct value? Explain or show your thinking.

Question 7
7.

262 + 438

Question 8
8.

575 + 166