What is 10% of 400? = 40
10 percent of 400 is 40. See the step-by-step solution, formula and worked example for how to calculate 10% of 400.
10% of 400 = 40
What is % of
Solution: What is 10 percent of 400?
10% × 400 =
(10 ÷ 100) × 400 =
(10 × 400) ÷ 100 =
4000 ÷ 100 = 40
(10 ÷ 100) × 400 =
(10 × 400) ÷ 100 =
4000 ÷ 100 = 40
Step-by-step explanation
- "Percent" means "per hundred", so 10% = 10 ÷ 100 = 0.1.
- "Of" means multiply, so we calculate 0.1 × 400.
- 0.1 × 400 = 40.
- So 10 percent of 400 is 40.
Good to know
Another way to check this: 1% of 400 is 4, and 10% is just 10 of those, so 10 × 4 = 40. Because 10% is a common fraction, you can also do it in your head. Percentages like this come up everywhere — working out a 10% deposit, tip, tax or commission on 400, for example.
Quick reference: percentages of 400
| 1% of 400 | 4 |
| 5% of 400 | 20 |
| 10% of 400 | 40 |
| 15% of 400 | 60 |
| 20% of 400 | 80 |
| 25% of 400 | 100 |
| 50% of 400 | 200 |
| 75% of 400 | 300 |
| 100% of 400 | 400 |
Frequently asked questions
What is 10 percent of 400?
10% of 400 is 40.
How do you calculate 10% of 400?
Divide 10 by 100 to get 0.1, then multiply by 400 to get 40.
What is 400 minus 10%?
400 − 40 = 360 (see 10% off 400).
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