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Unit 7 - Lesson 3 - Grade 2: Illustrative Mathematics

By Formative Library
Last updated 2 months ago
15 Questions
Note from the author:
Grade 2 Unit 7
Lesson 3: Count on or Count Back to Subtract
CC BY 2021 Illustrative Mathematics®
Grade 2 Unit 7
Lesson 3: Count on or Count Back to Subtract
CC BY 2021 Illustrative Mathematics®
Lesson: Count on or Count Back to Subtract

Number Talk: Tens and Hundreds (Warm Up)

Find the value of each expression mentally.
1.

2.

3.

4.

Jump Back, Back, Back

5.

What do you notice?

6.

What do you wonder?

7.

Try Andre’s way to find the value of
189 - 73.

Show your thinking. Use a number line if it helps.

8.

Find the value of 647 - 46 in your own way.

Show your thinking. Use a number line if it helps.

Who Spilled Paint?

9.

Oh no! Diego spilled paint on his paper and now he can’t see all the numbers.

Find the number that makes each equation true.
10.
250 + _______ = 1,000
11.
600 - 440 = _______
12.
680 + _______ = 900
13.
_______ + 590 = 1,000
14.
900 - 370 = _______
Cool Down : Mystery Number
15.

Find the number that makes the equation true.


Show your thinking.