In this Grade 5 Eureka Math lesson from Chapter 16, students learn to subtract fractions with unlike denominators by creating equivalent fractions with a common denominator. Using visual fraction models, students practice converting fractions like 1/2 and 1/3 into like units such as sixths before subtracting. The lesson builds on prior work with addition of unlike fractions and reinforces the concept of renaming units to make subtraction possible.
Section 1
Subtracting Fractions by Rewriting with Common Denominators
To subtract fractions with unlike denominators, they must first be rewritten as equivalent fractions with a common denominator.
Once the fractions have like denominators, subtract the numerators and keep the denominator the same.
Expand to review the lesson summary and core properties.
Section 1
Subtracting Fractions by Rewriting with Common Denominators
To subtract fractions with unlike denominators, they must first be rewritten as equivalent fractions with a common denominator.
Once the fractions have like denominators, subtract the numerators and keep the denominator the same.