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Unit 9 - Lesson 7 - Grade 2: Illustrative Mathematics

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21 Questions
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Grade 2 Unit 9
Lesson 7: Add and Subtract Within 1,000
CC BY 2021 Illustrative Mathematics®
Grade 2 Unit 9
Lesson 7: Add and Subtract Within 1,000
CC BY 2021 Illustrative Mathematics®
Lesson: Add and Subtract Within 1,000

Which One Doesn’t Belong: Add and Subtract Within 100 (Warm Up)

1.

Which one doesn’t belong?

Which Would You Rather Find?

2.

Circle 2 sums or differences you think would be the most challenging to find.

Find the value of one of these expressions. Show your thinking.

3.

Choose 2 other expressions and find the values. Show your thinking.

Add and Subtract within 100

Find the value of each expression.
4.

31 + 25

5.

43 + 28

6.

89 - 22

7.

40 - 28

8.

15 + 72

9.

85 - 37

10.

95 - 81

11.

37 + 55

12.

25 + 25

13.

63 - 19

14.

72 - 68

15.

21 + 59

16.

Choose one value that you think was less challenging to find. Explain.

17.

Choose one value that you think was more challenging to find. Explain.

Cool Down: Add and Subtract Within 1,000
Find the value of each expression.
18.

84 - 22

19.

504 + 183

20.

56 + 27

21.

Which value was the most challenging to find? Explain.