What is 10% off $40?
Price after 10% off
$36.00
You save $4.00
How it's calculated
- Find the discount: 10% of $40 = $40 × 0.1 = $4.00
- Subtract it from the price: $40 − $4.00 = $36.00
Shortcut: with 10% off you pay 90% of the price, so multiply $40 × 0.9 = $36.00 in one step.
Sales tax, if any, is usually added after the discount and isn't included here.