The answer is 20. Below: three ways to calculate it, a mental shortcut, and the real-world contexts where this percentage shows up.
10% of 200 is 20.
A small 10% discount on a 200-dollar item is one of the easiest mental calculations.
Divide the percent by 100 to convert it: 10 ÷ 100 = 0.1.
Multiply: 200 × 0.1 = 20.
10% means 10/100. So 10% of 200 is (10 × 200) ÷ 100.
Compute: 10 × 200 = 2000, then divide: 2000 ÷ 100 = 20.
For 10% of anything, move the decimal point one place to the left. So 10% of 200 is 20. This is the foundation for almost every other mental percentage shortcut.
A discount is just a percentage subtracted from the original price. To find the final price, calculate the discount first, then subtract.
A 10% off sticker on a $200 item means you save $20 and pay $180 at checkout.
If you only needed to look up this one number, here are some related ones using the same base of 200:
| Calculation | Answer |
|---|---|
| 20% of 200 | 40 |
| 25% of 200 | 50 |
| 30% of 200 | 60 |
| 50% of 200 | 100 |
| Calculation | Answer |
|---|---|
| 10% of 10 | 1 |
| 10% of 20 | 2 |
| 10% of 25 | 2.5 |
| 10% of 30 | 3 |
| 10% of 50 | 5 |
For any percentage of any number, use our percentage of a number calculator.
Multiply 200 by 0.1 (the decimal form of 10%). Or equivalently, multiply by 10/100. The result is 20.
Divide 20 by 200 and multiply by 100. That is exactly 10% — confirming the original calculation.
You save 20 and pay 180 at checkout.