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Unit 7 - Lesson 8 - Grade 2: Illustrative Mathematics

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9 Questions
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Grade 2 Unit 7
Lesson 8: Compose Tens and Hundreds to Add
CC BY 2021 Illustrative Mathematics®
Grade 2 Unit 7
Lesson 8: Compose Tens and Hundreds to Add
CC BY 2021 Illustrative Mathematics®
Lesson: Compose Tens and Hundreds to Add

How Many Do You See: Too Many Tens (Warm Up)

1.

How many do you see?

2.

How do you see them?

Compare the Sums

Find the value of each sum. Show your thinking. Use base-ten blocks if it helps.

3.

273 + 18

4.

273 + 81

5.

273 + 88

6.

What was the same and different about the sums?

Different Ways to Show Your Thinking

Priya and Lin were asked to find the value of 358 + 67.

7.

What do you notice about their work?

What is the same and different about their representations?

Be prepared to explain your thinking.


8.

Find the value of 546 + 86.

Show your thinking. Use base-ten blocks if it helps.

Cool Down: Make Tens and Hundreds
9.

Find the value of 278 + 65.

Show your thinking. Use base-ten blocks if it helps you.