# Lesson 11 Divide Unit Fractions by Whole Numbers

• Let’s divide a unit fraction by a whole number.

## Warm-up Number Talk: Double the Divisor

Find the value of each expression mentally.

## Activity 1 More Macaroni and Cheese

Jada and her 2 sisters equally share a pan of macaroni and cheese.

1. Draw a diagram to represent the situation.

2. Explain how this expression represents the situation:

3. How much of the whole pan of macaroni and cheese will each person get?

## Problem 1

4 people equally share a pan of macaroni and cheese.

1. Draw a diagram to represent the situation.

2. Explain how your diagram represents .

3. How much of the whole pan of macaroni and cheese did each person get? Be prepared to explain your reasoning.

## Problem 2

5 people equally share a pan of macaroni and cheese.

1. Draw a diagram to represent the situation.

2. Explain how your diagram represents .

3. How much of the whole pan of macaroni and cheese did each person get? Be prepared to explain your reasoning.

## Problem 3

How are the problems the same? How are they different?

## Problem 1

A pan of macaroni and cheese is full. Four friends split the remaining macaroni and cheese equally.

1. Make a drawing that represents the situation.

2. Write a division expression representing how much of a pan each friend gets.

3. Explain how the drawing shows the division expression.