Knowing how to calculate discounts quickly is an essential skill for any shopper who wants to save money. A discount is an amount of money taken off the original price of an item. It can be expressed as a percentage or a dollar amount. For example, a 20% discount on a $100 item would save you $20.
There are many different ways to calculate discounts quickly. One simple method is to use the following formula: Discount = Original Price x Discount Rate.