How to work it out
50% of 80 = 80 × 0.5 = 40
A percent means "per hundred", so 50% is 50/100, or 0.5. Multiply 80 by 0.5 to get 40. A quick mental shortcut: 10% of 80 is 8, so 50% is 8 × 5 = 40.
Related answers
- 80 plus 50% = 120 (an increase of 40)
- 80 minus 50% = 40, the price after a 50% discount
- 40 is 50% of 80, and 80 is 200% of 40
- If 80 is 50% of a number, that number is 160
Other percentages of 80
| Percent | Answer |
|---|---|
| 1% of 80 | 0.8 |
| 5% of 80 | 4 |
| 10% of 80 | 8 |
| 15% of 80 | 12 |
| 20% of 80 | 16 |
| 25% of 80 | 20 |
| 30% of 80 | 24 |
| 40% of 80 | 32 |
| 60% of 80 | 48 |
| 70% of 80 | 56 |
| 75% of 80 | 60 |
| 80% of 80 | 64 |
| 90% of 80 | 72 |
| 100% of 80 | 80 |
50% of other numbers
| Question | Answer |
|---|---|
| 50% of 20 | 10 |
| 50% of 50 | 25 |
| 50% of 60 | 30 |
| 50% of 100 | 50 |
| 50% of 150 | 75 |
| 50% of 200 | 100 |
| 50% of 250 | 125 |
| 50% of 500 | 250 |
| 50% of 1,000 | 500 |