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Fractions worked out, one step at a time

Add, subtract, multiply and divide fractions and mixed numbers, or turn a fraction into a decimal and a percent and back again. Every answer comes with the working, so you can check it or learn it.

Write a mixed number with a space, like 2 1/3. Use × and ÷, or * and :.

Fraction
Mixed number
Decimal
Percent

Working

    Adding and subtracting fractions

    Fractions can only be added when their bottom numbers match. The calculator finds the lowest common denominator, rewrites each fraction over it, adds or subtracts the top numbers and then simplifies. Mixed numbers like 1 1/2 are turned into improper fractions first, so 1 1/2 becomes 3/2.

    Multiplying and dividing

    To multiply, multiply the tops together and the bottoms together. To divide, flip the second fraction upside down and multiply. Each answer is reduced to its simplest form and shown as a mixed number when it is bigger than one.

    Repeating decimals

    Switch to Convert to turn decimals and percents into fractions. Type a repeating decimal with three dots, like 0.333... or 0.1666..., or put the repeating part in brackets, like 0.1(6). The working shows the classic method: multiply so the repeats line up, subtract, and solve.

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