# Lesson 17 Fraction Multiplication and Division Situations

• Let’s solve problems involving multiplying and dividing fractions.

## Warm-up Number Talk: Multiply and Divide

Find the value of each expression mentally.

## Problem 1

Your teacher will give you either a problem card or a data card. Do not show or read your card to your partner.

If your teacher gives you the problem card:

3. Explain to your partner how you are using the information to solve the problem.

## Problem 2

If your teacher gives you the data card:

2. Ask your partner, “What specific information do you need?” and wait for your partner to ask for information. Only give information that is on your card. (Do not figure out anything for your partner!)

3. Before telling your partner the information, ask, “Why do you need that information?”

4. After your partner solves the problem, ask them to explain their reasoning and listen to their explanation.

## Activity 2 Multiplication or Division

Solve each problem. Explain or show your reasoning.

1. If 11 grains of rice weigh gram, how much does each grain of rice weigh?

2. Mai’s road is mile long. She ran of the length of her road. How far did she run?

3. If each tennis ball weighs ounces, how much do 9 tennis balls weigh?