How to find 10 percent of 80
"Percent" means per hundred, so 10% is the fraction 10/100, or 0.1 as a decimal. Taking 10 percent of 80 means multiplying 80 by that fraction:
10% of 80 = 80 x 10 / 100
= 800 / 100
= 8The same answer comes from the decimal form: 80 x 0.1 = 8. And because multiplication is commutative, 10% of 80 equals 80% of 10, which is sometimes the easier way to see it in your head.
Mental math shortcut
10% of 80 is 8 (move the decimal one place left), and 1% is 0.8. Build 10% from those pieces: 1 x 8 = 8.
Nearby percentages of 80
| Percent | Of 80 | 80 minus it | 80 plus it |
|---|---|---|---|
| 1% | 0.8 | 79.2 | 80.8 |
| 5% | 4 | 76 | 84 |
| 9% | 7.2 | 72.8 | 87.2 |
| 11% | 8.8 | 71.2 | 88.8 |
| 15% | 12 | 68 | 92 |
| 20% | 16 | 64 | 96 |
| 25% | 20 | 60 | 100 |
| 30% | 24 | 56 | 104 |
| 50% | 40 | 40 | 120 |
| 75% | 60 | 20 | 140 |
10 percent of other amounts
| Amount | 10% of it |
|---|---|
| 20 | 2 |
| 25 | 2.5 |
| 30 | 3 |
| 40 | 4 |
| 50 | 5 |
| 60 | 6 |
| 75 | 7.5 |
| 100 | 10 |
| 120 | 12 |
| 150 | 15 |
Where this comes up
A 10% discount on a 80 price takes off 8, leaving 72. A 10% tip or tax on 80 adds 8, for a total of 88. If 80 is a score out of a possible total, 10% of it is the share 8 represents. For percent change, reverse percentages, and "X is what percent of Y", use the full percentage calculator.