What is 10% off 80?
10% off 80 = 72 (you save 8)
- Sale price
- 72
- You save
- 8
- You pay
- 90%
- Original
- 80
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
- Work out the discount: 10% of 80 = 0.1 × 80 = 8
- Take it off the price: 80 − 8 = 72
- Check: Add the saving back: 72 + 8 = 80.
Another method. In one step: you pay 90% of the price, so 0.9 × 80 = 72. Both methods always give the same answer.
In a spreadsheet: =80*(1-10%). Taking the percentage of the price gives the saving, not the price you pay. Subtract it, or multiply by the share that is left.
What the result means
After 10% off, you pay 90% of the price: 72 instead of 80, a saving of 8.
Shopping: an item marked $80 with 10% off costs $72 at the till, before any sales tax.
Stacked discounts
10% off followed by another 10% off is 19% off in total, not 20%: the second discount applies to the lower price.
Related results
| 15% off 80 | 15% off 80 = 68 (you save 12) |
| 20% off 80 | 20% off 80 = 64 (you save 16) |
| 25% off 80 | 25% off 80 = 60 (you save 20) |
| 30% off 80 | 30% off 80 = 56 (you save 24) |
| 40% off 80 | 40% off 80 = 48 (you save 32) |
| 50% off 80 | 50% off 80 = 40 (you save 40) |
The other way round: 10% of 80. Two discounts do not add up: 10% off and then another 10% off leaves 64.8, not 64, because the second discount is taken of the lower price.
Practice
| 3% off 9 | Show answer3% off 9 = 8.73 (you save 0.27) |
| 77% off 69 | Show answer77% off 69 = 15.87 (you save 53.13) |
| 85% off 33 | Show answer85% off 33 = 4.95 (you save 28.05) |
| 20% off 68 | Show answer20% off 68 = 54.4 (you save 13.6) |
| 21% off 73 | Show answer21% off 73 = 57.67 (you save 15.33) |
| 3% off 97 | Show answer3% off 97 = 94.09 (you save 2.91) |
How answers are calculated and checked: methodology.
Questions
What is 10% off 80?
10% off 80 is 72: you save 8. Formula and steps for the sale price.
How much do I save with 10% off 80?
8. That is 10% of 80.
What was the price before 10% off if I paid 72?
80. Divide what you paid by 0.9, the share of the price that is left.