FutureStarr

How to Take 20 Percent of a Number

## How to Take 20 Percent of a Number

This is a lesson from the genius of Buckminster Fuller, but you probably know him as the guy who created the geodesic dome . . . although I’d hazard to guess it’s not the dome you’re thinking of.

### Use

This discount calculator allows you to find the reduced price of a product and the amount of money you save. You can also use it for the reverse and calculate the size of the discount or the original price. As a shopper, you it also functions as a sale price calculator to help you negotiate the price. Got a coupon? Find out what the final price will be after you factor in that 15% off discount that you have. These are just a few of the situations this calculator will help you with. If you are on the other side of these transactions, that is you are a sales person, you might want find out what your sale price will be (our profit margin with discount or markdown calculator may also be handy). Read on to find out how to calculate discount and what the discount formula is.

Percentages are found in many contexts beyond practice problems in math textbooks. One of the best examples is sale prices, which are often advertised as a particular percentage off of a price. Tips on a restaurant bill are also usually calculated as a percentage of the total bill. Knowing how to calculate percentages is a useful skill; sometimes you'll need to know the exact percent of a number, while others only require an estimate. You can perform these calculations in your head or by using a calculator. (Source: pocketsense.com)

### Write

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### Math

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This article was co-authored by Grace Imson, MA. Grace Imson is a math teacher with over 40 years of teaching experience. Grace is currently a math instructor at the City College of San Francisco and was previously in the Math Department at Saint Louis University. She has taught math at the elementary, middle, high school, and college levels. She has an MA in Education, specializing in Administration and Supervision from Saint Louis University. This article has been viewed 8,055,134 times.

Percentages are found in many contexts beyond practice problems in math textbooks. One of the best examples is sale prices, which are often advertised as a particular percentage off of a price. Tips on a restaurant bill are also usually calculated as a percentage of the total bill. Knowing how to calculate percentages is a useful skill; sometimes you'll need to know the exact percent of a number, while others only require an estimate. You can perform these calculations in your head or by using a calculator. (Source: pocketsense.com)

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