Everyday
What is 50% of 40?
50% of 40 = 20
The answer, how it is worked out, and the percentages people look up next.
Working: 50 ÷ 100 × 40 = 20
Common questions
How do you work out 50% of 40?
Divide 50 by 100 to get the decimal, then multiply by 40. That gives 20.
What is the formula for percentages?
Percent of a number = (percent ÷ 100) × number. The same formula works for any pair of values.
How do I do this without a calculator?
Find 10% by moving the decimal one place left, then scale it. 10% of 40 is 4, so you can add or subtract tenths and halves to reach most percentages quickly.