What is 10% of 40?

10% of 40 = 4

How to work it out

1. Convert the percentage to a decimal: 10 ÷ 100 = 0.1
2. Multiply by the number: 0.1 × 40 = 4

40 increased by 10% is 44; decreased by 10% it is 36 (useful for discounts).

Calculate any percentage

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