Fraction arithmetic
Add, subtract, multiply or divide two fractions and simplify the result.
Open tool →Tools and learning resources
Choose a specific tool and review the method and limitations before relying on a result.
GCD and LCM
Find the greatest common divisor and least common multiple of integers.
Open tool →Prime number test
Determine whether a nonnegative integer is prime by checking possible divisors.
Open tool →Ratio distribution
Scale two-part ratios to a specified total.
Open tool →Percentage of a number
Find a percent of any numeric amount.
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