Learn how to find the percentage of any number in 2 steps. Method: multiply by decimal equivalent. 15% of 200 = 0.15 × 200 = 30. With 15 examples and mental math tricks.
Method: convert % to decimal (divide by 100), then multiply. 15% of 200 → 0.15 × 200 = 30. Quick tricks: 10% = move decimal left. 50% = divide by 2. 25% = divide by 4.
| % | Shortcut | Example (of 80) |
|---|---|---|
| 10% | Move decimal left 1 | 8 |
| 20% | 10% × 2 | 16 |
| 25% | Divide by 4 | 20 |
| 50% | Divide by 2 | 40 |
| 75% | 50% + 25% | 60 |
| 1% | Move decimal left 2 | 0.8 |