1
How many do you see?
How many do you see?
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How do you see them?
How do you see them?
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®
How many do you see?
How do you see them?
Find the value of each sum. Show your thinking. Use base-ten blocks if it helps.
273 + 18
273 + 81
273 + 88
Priya and Lin were asked to find the value of 358 + 67.
What do you notice about their work?
What is the same and different about their representations?
Be prepared to explain your thinking.
Find the value of 546 + 86.
Show your thinking. Use base-ten blocks if it helps.
Find the value of 278 + 65.
Show your thinking. Use base-ten blocks if it helps you.
What was the same and different about the sums?
