How to find 50 percent of 10
"Percent" means per hundred, so 50% is the fraction 50/100, or 0.5 as a decimal. Taking 50 percent of 10 means multiplying 10 by that fraction:
50% of 10 = 10 x 50 / 100
= 500 / 100
= 5The same answer comes from the decimal form: 10 x 0.5 = 5. And because multiplication is commutative, 50% of 10 equals 10% of 50, 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 50% from those pieces: 5 x 1 = 5.
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 |
| 15% | 1.5 | 8.5 | 11.5 |
| 20% | 2 | 8 | 12 |
| 25% | 2.5 | 7.5 | 12.5 |
| 30% | 3 | 7 | 13 |
| 45% | 4.5 | 5.5 | 14.5 |
| 49% | 4.9 | 5.1 | 14.9 |
| 51% | 5.1 | 4.9 | 15.1 |
| 55% | 5.5 | 4.5 | 15.5 |
| 75% | 7.5 | 2.5 | 17.5 |
50 percent of other amounts
| Amount | 50% of it |
|---|---|
| 20 | 10 |
| 25 | 12.5 |
| 30 | 15 |
| 40 | 20 |
| 50 | 25 |
Where this comes up
A 50% discount on a 10 price takes off 5, leaving 5. A 50% tip or tax on 10 adds 5, for a total of 15. If 10 is a score out of a possible total, 50% of it is the share 5 represents. For percent change, reverse percentages, and "X is what percent of Y", use the full percentage calculator.