# Lesson 4 Equal Groups of Non-Unit Fractions

Let’s multiply any fraction by a whole number.

## Warm-up Notice and Wonder: Thirds

What do you notice? What do you wonder?

## Activity 1 Jars of Jam

## Problem 1

Elena fills 5 small jars with homemade jams to share with her friends. Each jar can fit

## Problem 2

If you have time… Elena still has some jam left. She takes 2 large jars and puts

## Activity 2 How Do We Multiply?

## Problem 1

This diagram represents

Show how you would use or adjust the diagram to represent

. What is the value of the shaded parts in your diagram?

## Problem 2

This diagram represents

Show how you would use or adjust the diagram to represent

. What is the value of the shaded parts in your diagram?

## Problem 3

Find the value of each expression. Draw a diagram if you find it helpful. Be prepared to explain your reasoning.

## Problem 4

Mai said that to multiply any fraction by a whole number, she would multiply the whole number and the numerator of the fraction and keep the same denominator. Do you agree with Mai? Explain your reasoning.

## Practice Problem

## Problem 1

Draw a diagram to show

. How does the diagram help you find the value of the expression

?