Free Interactive Math Practice

Adding and Subtracting Fractions

Practice adding and subtracting fractions one step at a time by finding a common denominator, rewriting each fraction, combining the numerators, and simplifying the result.

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New to Adding and Subtracting Fractions?

Learn the Fraction Rules First

Learn how to find the least common denominator, rewrite equivalent fractions, combine numerators correctly, simplify your answers, and avoid common fraction mistakes before beginning the practice activity.

Read the Fraction Guide

Learn the process

Solve Each Problem Step by Step

Instead of entering only the final answer, you will work through each important part of the fraction problem.

1

Find the Denominator

Decide whether the fractions already have a common denominator or find the least common denominator.

2

Rewrite the Fractions

Create equivalent fractions so both fractions have the same denominator.

3

Add or Subtract

Combine the numerators while keeping the common denominator.

4

Simplify

Reduce the fraction to its simplest form whenever possible.

Practice Mode

Work Through the Problem

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Problems 0
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Solve:

1 3 + 1 6
1

Denominator

2

Rewrite

3

Combine

4

Simplify

Step 1

Find the least common denominator.

What is the smallest number that both denominators divide into evenly?

Remember

Fraction Addition and Subtraction Rules

Same Denominators

Add or subtract the numerators and keep the denominator the same.

3/8 + 2/8 = 5/8

Different Denominators

Find a common denominator before adding or subtracting the numerators.

1/3 + 1/6 = 2/6 + 1/6

Simplify the Result

Divide the numerator and denominator by their greatest common factor.

3/6 = 1/2

Need more help?

Learn Fractions with One-on-One Math Tutoring

Personalized online tutoring can help students understand why fraction methods work instead of simply memorizing steps.

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