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K-5 Grade 5 Unit 3 Lesson 8

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•K-5 Math 6-8 Math 9-12 Math

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Unit 1 Unit 2 •Unit 3 Unit 4 Unit 5 Unit 6 Unit 7 Unit 8

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Lesson 8

Warm-up Activity 1 Activity 2

Unit 3, Lesson 8

Work with Mixed Numbers

Grade 5

Warm-up

What do you notice? What do you wonder?

A

B

C

D

Activity 1

Find the value of . Show or explain your reasoning.
Lin and Han draw diagrams to find the value of .
1. How are Lin’s and Han’s diagrams alike? How are they different?
2. Discuss how to use each diagram to find the value of .
Here is Jada’s way to multiply .

I know that 2 is , so is .

I also know that 3 is , so is .

Compare the different ways to find the value of .

How are they alike? How are they different?

Activity 2

Choose any 3 expressions. Find the value of each product. Explain or show your reasoning.