# Fraction Equivalence Using Multiplication

Videos to help Grade 4 students learn how to use the area model and multiplication to show the equivalence of two fractions.

Common Core Standards: 4.NF.1, 4.NF.3b

Related Topics:
Lesson Plans and Worksheets for Grade 4

Lesson Plans and Worksheets for all Grades

## New York State common Core Grade 4 Module 5, Lesson 8

Lesson 8 Concept Development

Problem 1: Determine that multiplying both the numerator and denominator by n results in an equivalent fraction.
Problem 2: Determine that two fractions are equivalent using an area model and a number sentence.
Problem 3: Write a number sentence using multiplication to show the equivalence of two fractions. Draw the corresponding area model.
Lesson 8 Problem Set 1

Each rectangle represents 1 whole.
1. The shaded fractions have been decomposed into smaller units. Express the equivalent fractions in a number sentence using multiplication.

Lesson 8 Problem Set 2

2. Decompose the shaded fractions into smaller units, as given below. Express the equivalent fractions in a number sentence using multiplication.
a. Decompose into tenths.
b. Decompose into fifteenths.
Lesson 8 Problem Set 3

3. Draw area models to prove that the following number sentences are true.
a. 2/5 = 4/10
b. 2/3 = 8/12

Lesson 8 Problem Set 3

4. Use multiplication to rename each fraction below.
a. 3/4
b. 4/5
c. 7/6
d. 12/7

5. Determine which of the following are true number sentences. Correct those that are false by changing the right-hand side of the number sentence.
a. 4/3 = 8/9
b. 5/4 = 10/8
c. 4/5 = 12/10
d. 4/6 = 12/8