Math Tools
Each tool shows its steps, not just the answer. For example, 5/6 + 3/8 becomes 20/24 + 9/24 = 29/24 = 1 5/24.
Fraction Calculator
Add, subtract, multiply and divide fractions with steps.
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Percent Calculator
Find a percent, a percent change, or the original number.
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GPA Calculator
Add up your grades and credits to get your GPA.
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Quadratic Solver
Solve ax² + bx + c = 0 and see each step.
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Pythagorean Theorem Calculator
Find a missing side of a right triangle.
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Mean, Median and Mode
Paste your numbers and get all three, plus the range.
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LCM and GCF Calculator
Find the least common multiple and greatest common factor.
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Unit Converter
Length, weight, temperature, volume and more.
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Prime Number Checker
Test any number and see its factors.
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Divisibility Rules Practice
Check a number against the rules for 2 through 10.
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Times Tables Trainer
Build and practice tables from 1 to 20.
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Place Value Explorer
Break a number into ones, tens, hundreds and more.
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