7R Unit 4 Percent Flashcard Review

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the numerator by the denominator and then multiply by 100.

Front

What is the formula to find the percent of a number?

Back

The formula is: Percent = (Part/Whole) x 100.

Front

If 25% of a number is 50, what is the number?

Back

The number is 200. (50 = 0.25 * Number; Number = 50 / 0.25 = 200)

Front

What does it mean to increase a number by a percent?

Back

To increase a number by a percent means to add that percent of the number to the original number.

Front

What does it mean to decrease a number by a percent?

Back

To decrease a number by a percent means to subtract that percent of the number from the original number.

Front

How do you calculate a 10% discount on an item that costs $80?

Back

10% of $80 is $8. So, the discount is $8, and the new price is $80 - $8 = $72.

Front

What is the relationship between percent, decimal, and fraction?

Back

A percent can be converted to a decimal by dividing by 100, and to a fraction by placing it over 100 and simplifying.

Front

If a shirt originally costs $40 and is on sale for 30% off, what is the sale price?

Back

The sale price is $28. (30% of $40 is $12; $40 - $12 = $28)

Front

What is the percent change formula?

Back

Percent Change = ((New Value - Old Value) / Old Value) x 100.