Lesson 8 Divide to Multiply Non-unit Fractions

    • Let’s solve problems about multiplying whole numbers by fractions.

Warm-up True or False: A Fraction by a Whole Number

Decide if each statement true or false. Be prepared to explain your reasoning.

Activity 1 Multiply a Whole Number by a Fraction

Find the value of each expression. Explain or show your reasoning. Draw a diagram if it is helpful. 

Activity 2 Match Expressions to Diagrams

Explain how each expression represents the shaded region.

Practice Problem

Problem 1

Kiran ran the length of his road, which is 9 miles long.

  1. How far did Kiran run?

  2. Show or explain your thinking.