How to find 20 percent of 80
"Percent" means per hundred, so 20% is the fraction 20/100, or 0.2 as a decimal. Taking 20 percent of 80 means multiplying 80 by that fraction:
20% of 80 = 80 x 20 / 100
= 1,600 / 100
= 16The same answer comes from the decimal form: 80 x 0.2 = 16. And because multiplication is commutative, 20% of 80 equals 80% of 20, 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 20% from those pieces: 2 x 8 = 16.
Nearby percentages of 80
| Percent | Of 80 | 80 minus it | 80 plus it |
|---|---|---|---|
| 1% | 0.8 | 79.2 | 80.8 |
| 5% | 4 | 76 | 84 |
| 10% | 8 | 72 | 88 |
| 15% | 12 | 68 | 92 |
| 19% | 15.2 | 64.8 | 95.2 |
| 21% | 16.8 | 63.2 | 96.8 |
| 25% | 20 | 60 | 100 |
| 30% | 24 | 56 | 104 |
| 40% | 32 | 48 | 112 |
| 50% | 40 | 40 | 120 |
| 75% | 60 | 20 | 140 |
20 percent of other amounts
| Amount | 20% of it |
|---|---|
| 20 | 4 |
| 25 | 5 |
| 30 | 6 |
| 40 | 8 |
| 50 | 10 |
| 60 | 12 |
| 75 | 15 |
| 100 | 20 |
| 120 | 24 |
| 150 | 30 |
Where this comes up
A 20% discount on a 80 price takes off 16, leaving 64. A 20% tip or tax on 80 adds 16, for a total of 96. If 80 is a score out of a possible total, 20% of it is the share 16 represents. For percent change, reverse percentages, and "X is what percent of Y", use the full percentage calculator.