What is 20% of 40? = 8
20 percent of 40 is 8. See the step-by-step solution, formula and worked example for how to calculate 20% of 40.
20% of 40 = 8
What is % of
Solution: What is 20 percent of 40?
20% × 40 =
(20 ÷ 100) × 40 =
(20 × 40) ÷ 100 =
800 ÷ 100 = 8
(20 ÷ 100) × 40 =
(20 × 40) ÷ 100 =
800 ÷ 100 = 8
Step-by-step explanation
- "Percent" means "per hundred", so 20% = 20 ÷ 100 = 0.2.
- "Of" means multiply, so we calculate 0.2 × 40.
- 0.2 × 40 = 8.
- So 20 percent of 40 is 8.
Good to know
Another way to check this: 1% of 40 is 0.4, and 20% is just 20 of those, so 20 × 0.4 = 8. Because 20% is a common fraction, you can also do it in your head. Percentages like this come up everywhere — working out a 20% deposit, tip, tax or commission on 40, for example.
Quick reference: percentages of 40
| 1% of 40 | 0.4 |
| 5% of 40 | 2 |
| 10% of 40 | 4 |
| 15% of 40 | 6 |
| 20% of 40 | 8 |
| 25% of 40 | 10 |
| 50% of 40 | 20 |
| 75% of 40 | 30 |
| 100% of 40 | 40 |
Frequently asked questions
What is 20 percent of 40?
20% of 40 is 8.
How do you calculate 20% of 40?
Divide 20 by 100 to get 0.2, then multiply by 40 to get 8.
What is 40 minus 20%?
40 − 8 = 32 (see 20% off 40).
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