How to find 18 percent of 10
"Percent" means per hundred, so 18% is the fraction 18/100, or 0.18 as a decimal. Taking 18 percent of 10 means multiplying 10 by that fraction:
18% of 10 = 10 x 18 / 100
= 180 / 100
= 1.8The same answer comes from the decimal form: 10 x 0.18 = 1.8. And because multiplication is commutative, 18% of 10 equals 10% of 18, which is sometimes the easier way to see it in your head.
Mental math shortcut
10% of 10 is 1 (move the decimal one place left), and 1% is 0.1. Build 18% from those pieces: 1 x 1 + 8 x 0.1 = 1.8.
Nearby percentages of 10
| Percent | Of 10 | 10 minus it | 10 plus it |
|---|---|---|---|
| 1% | 0.1 | 9.9 | 10.1 |
| 5% | 0.5 | 9.5 | 10.5 |
| 10% | 1 | 9 | 11 |
| 13% | 1.3 | 8.7 | 11.3 |
| 15% | 1.5 | 8.5 | 11.5 |
| 17% | 1.7 | 8.3 | 11.7 |
| 19% | 1.9 | 8.1 | 11.9 |
| 20% | 2 | 8 | 12 |
| 23% | 2.3 | 7.7 | 12.3 |
| 25% | 2.5 | 7.5 | 12.5 |
| 30% | 3 | 7 | 13 |
| 36% | 3.6 | 6.4 | 13.6 |
18 percent of other amounts
| Amount | 18% of it |
|---|---|
| 20 | 3.6 |
| 25 | 4.5 |
| 30 | 5.4 |
| 40 | 7.2 |
| 50 | 9 |
Where this comes up
A 18% discount on a 10 price takes off 1.8, leaving 8.2. A 18% tip or tax on 10 adds 1.8, for a total of 11.8. If 10 is a score out of a possible total, 18% of it is the share 1.8 represents. For percent change, reverse percentages, and "X is what percent of Y", use the full percentage calculator.