# 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

Draw a diagram to represent the situation.

Explain how this expression represents the situation:

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

## Activity 2 More People Share

## Problem 1

4 people equally share

Draw a diagram to represent the situation.

Explain how your diagram represents

. 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

Draw a diagram to represent the situation.

Explain how your diagram represents

. 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?

## Practice Problem

## Problem 1

A pan of macaroni and cheese is

Make a drawing that represents the situation.

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

Explain how the drawing shows the division expression.