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Unit 3 - Lesson 3 - Grade 3: Illustrative Mathematics

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Last updated 11 months ago
11 questions
Note from the author:
Grade 3 Unit 3
Lesson 3: Add Your Way
CC BY 2021 Illustrative Mathematics®
Grade 3 Unit 3
Lesson 3: Add Your Way
CC BY 2021 Illustrative Mathematics®
Lesson: Add Your Way
Cool Down: Add It Up
1

Number Talk: Hundreds, Tens, and Ones (Warm Up)

Find the value of each expression mentally.

1
Question 1
1.

200 + 40 + 7

1
Question 2
2.

50 + 300 + 2

1
Question 3
3.

40 + 600 + 12

1

Strategies to Add

Find the value of each sum in any way that makes sense to you. Explain or show your reasoning.
1
Question 5
5.

325 + 102

1
Question 6
6.

301 + 52

1
1

Two Ways to Add

Andre found the value of 276 + 118. His work is shown.



Clare found the value of 276 + 118. Her work is shown.

1
Question 9
9.

With your partner, discuss:

What’s different about Clare and Andre’s work?

1
Question 10
10.

With your partner, discuss:

What’s the same?

Question 11
11.

Find the value of 258 + 217. Explain or show your reasoning.

Question 4
4.

500 + 17 + 130

Question 7
7.

276 + 118

Question 8
8.

298 + 305