How to work it out
20% of 100 = 100 × 0.2 = 20
A percent means "per hundred", so 20% is 20/100, or 0.2. Multiply 100 by 0.2 to get 20. A quick mental shortcut: 10% of 100 is 10, so 20% is 10 × 2 = 20.
Related answers
- 100 plus 20% = 120 (an increase of 20)
- 100 minus 20% = 80, the price after a 20% discount
- 20 is 20% of 100, and 100 is 500% of 20
- If 100 is 20% of a number, that number is 500
Other percentages of 100
| Percent | Answer |
|---|---|
| 1% of 100 | 1 |
| 5% of 100 | 5 |
| 10% of 100 | 10 |
| 15% of 100 | 15 |
| 25% of 100 | 25 |
| 30% of 100 | 30 |
| 40% of 100 | 40 |
| 50% of 100 | 50 |
| 60% of 100 | 60 |
| 70% of 100 | 70 |
| 75% of 100 | 75 |
| 80% of 100 | 80 |
| 90% of 100 | 90 |
| 100% of 100 | 100 |
20% of other numbers
| Question | Answer |
|---|---|
| 20% of 20 | 4 |
| 20% of 50 | 10 |
| 20% of 60 | 12 |
| 20% of 80 | 16 |
| 20% of 150 | 30 |
| 20% of 200 | 40 |
| 20% of 250 | 50 |
| 20% of 500 | 100 |
| 20% of 1,000 | 200 |