Math Calculators

These are the calculators for the arithmetic that shows its working. Fractions, percentages, ratios, roots and geometry — each one returns the answer and the steps that produced it, so they are as useful for checking homework or learning a method as for getting a number quickly.

The fraction tools are the most used here, and they cover the operations where the procedure differs. Adding and subtracting need a common denominator; multiplying does not, and goes straight across; dividing means multiplying by the reciprocal. Every result is given in lowest terms, as a decimal, and as a mixed number where the fraction is improper, because which form you want depends entirely on what you are doing with it next.

If you want the reasoning rather than just the result, the math lessons cover the same ground in more depth, with worked examples and diagrams — and most calculators link to the matching lesson. The practice problems generate fresh questions with answers if you would rather work through them yourself.