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Free Calculators

For everyday maths and exam practice. Every answer shows its working, so you can see how it’s done — and do it yourself next time.

Basic arithmetic

Add, subtract, multiply and divide — with brackets, worked in the right order.

A percentage of a number, one number as a percentage of another, and percentage change.

Add, subtract, multiply and divide fractions — simplified, as a mixed number and as a decimal.

The average (mean) of a list of numbers, with the total and the count.

Interest and the final amount, compounded yearly, half-yearly, quarterly or monthly.

Profit or loss and its percentage, or the price after a discount.

Find any one of the three from the other two, in kilometres and hours.

Want to do these in your head?

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