What is 10 Percent of 80?
10% of 80 = 8
- Result
- 8
- Remaining
- 72
- 10% as decimal
- 0.1
- 80 + 10%
- 88
Sumwise · Maintained by Theo Abbott (pen name) · automated checks · Data: exact arithmetic; unit definitions from NIST SP 811 · Updated · How the checks work
How to work it out
- Turn the percentage into a decimal: 10 ÷ 100 = 0.1
- Multiply: 0.1 × 80 = 8
- Check: Work backwards: 8 ÷ 80 × 100 = 10%.
Another method. As a proportion of part to whole: 10/100 = part/80, so part = 10 × 80 ÷ 100 = 8. Both methods always give the same answer.
In a spreadsheet: =10%*80. Forgetting to divide the percentage by 100 makes the answer 100 times too big. Note that x% of y always equals y% of x.
What the result means
8 is the 10% share of 80. The remaining 90% is 72, and the two parts add back up to 80.
Discounts: 10% off an item priced $80 saves $8, so you pay $72.
Adding and taking away 10%
Increasing 80 by 10% gives 88 and decreasing it by 10% gives 72. These do not cancel out: raising 80 by 10% and then lowering the result by 10% ends at 79.2, because the second 10% is taken of a bigger number.
Related results
| 5% of 80 | 5% of 80 = 4 |
| 15% of 80 | 15% of 80 = 12 |
| 20% of 80 | 20% of 80 = 16 |
| 25% of 80 | 25% of 80 = 20 |
| 50% of 80 | 50% of 80 = 40 |
| 75% of 80 | 75% of 80 = 60 |
The other way round: 80% of 10. 10% of 80 and 80% of 10 are always equal (both are 10 × 80 ÷ 100 = 8), so you can swap the numbers when one order is easier to work out in your head.
Practice
| 3% of 9 | Show answer3% of 9 = 0.27 |
| 77% of 69 | Show answer77% of 69 = 53.13 |
| 85% of 33 | Show answer85% of 33 = 28.05 |
| 20% of 68 | Show answer20% of 68 = 13.6 |
| 21% of 73 | Show answer21% of 73 = 15.33 |
| 3% of 97 | Show answer3% of 97 = 2.91 |
How answers are calculated and checked: methodology.
Questions
What is 10 Percent of 80?
10% of 80 is 8. Formula, steps and practice examples.
What is 10% off 80?
72. Taking 10% off leaves 90% of 80.
What is 80 plus 10%?
88. Adding 10% is the same as multiplying by 1.1.