What is 10% off $20?
Price after 10% off
$18.00
You save $2.00
How it's calculated
- Find the discount: 10% of $20 = $20 × 0.1 = $2.00
- Subtract it from the price: $20 − $2.00 = $18.00
Shortcut: with 10% off you pay 90% of the price, so multiply $20 × 0.9 = $18.00 in one step.
Sales tax, if any, is usually added after the discount and isn't included here.