How to find 10 percent of 20
"Percent" means per hundred, so 10% is the fraction 10/100, or 0.1 as a decimal. Taking 10 percent of 20 means multiplying 20 by that fraction:
10% of 20 = 20 x 10 / 100
= 200 / 100
= 2The same answer comes from the decimal form: 20 x 0.1 = 2. And because multiplication is commutative, 10% of 20 equals 20% of 10, which is sometimes the easier way to see it in your head.
Mental math shortcut
10% of 20 is 2 (move the decimal one place left), and 1% is 0.2. Build 10% from those pieces: 1 x 2 = 2.
Nearby percentages of 20
| Percent | Of 20 | 20 minus it | 20 plus it |
|---|---|---|---|
| 1% | 0.2 | 19.8 | 20.2 |
| 5% | 1 | 19 | 21 |
| 9% | 1.8 | 18.2 | 21.8 |
| 11% | 2.2 | 17.8 | 22.2 |
| 15% | 3 | 17 | 23 |
| 20% | 4 | 16 | 24 |
| 25% | 5 | 15 | 25 |
| 30% | 6 | 14 | 26 |
| 50% | 10 | 10 | 30 |
| 75% | 15 | 5 | 35 |
10 percent of other amounts
| Amount | 10% of it |
|---|---|
| 10 | 1 |
| 25 | 2.5 |
| 30 | 3 |
| 40 | 4 |
| 50 | 5 |
| 60 | 6 |
| 75 | 7.5 |
| 80 | 8 |
| 100 | 10 |
Where this comes up
A 10% discount on a 20 price takes off 2, leaving 18. A 10% tip or tax on 20 adds 2, for a total of 22. If 20 is a score out of a possible total, 10% of it is the share 2 represents. For percent change, reverse percentages, and "X is what percent of Y", use the full percentage calculator.