What is 50% off $20?

How it's calculated

1. Find the discount: 50% of $20 = $20 × 0.5 = $10.00
2. Subtract it from the price: $20 − $10.00 = $10.00

Shortcut: with 50% off you pay 50% of the price, so multiply $20 × 0.5 = $10.00 in one step.

Sales tax, if any, is usually added after the discount and isn't included here.