Wolfram|Alpha can do basic arithmetic computations on fractions. It can also do related computations, including converting between fractions and decimals and simplifying improper fractions to mixed fractions.
Perform addition and subtraction on fractions.
Compute fraction problems involving multiple operations.
Do exact arithmetic with fractions:
Perform multiplication and division on fractions.
Visualize fractions or fraction arithmetic with pie charts and tape diagrams.
Visualize fractions with pie charts or tape diagrams:
See pie charts for fraction arithmetic:
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Convert between mixed numbers and improper fractions.