How do you multiply fractions?
Multiply the top numbers (numerators) together, and then multiply the bottom numbers (denominators) together.
Calculator
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Analysis
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How to Use
Step-by-step instructions
- 1Enter the numerator and denominator for both fractions.
- 2Select the operation (+, -, *, /).
- 3View the simplified result and its mixed/decimal counterparts.
Fraction Arithmetic
Calculating with fractions requires finding a common denominator for addition and subtraction, or multiplying across for multiplication.
a/b + c/d = (ad + bc) / bdVariables:
Frequently Asked Questions
Why do you need a common denominator?
To add or subtract fractions, they must represent the same size parts of a whole, which means their denominators must be identical.