Percents & Percent Proportions

Front

What is a percent?

Back

A percent is a ratio that compares a number to 100. It is often used to express how much of something there is out of a total.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the top number (numerator) by the bottom number (denominator) and then multiply by 100.

Front

What does 'IS' represent in percent problems?

Back

'IS' represents the part of the whole that is being compared to the total.

Front

What does 'OF' represent in percent problems?

Back

'OF' represents the whole amount or total that the percent is being calculated from.

Front

What is the formula for finding the percent of a number?

Back

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

Front

If 30 is 60% of what number, how do you find the whole?

Back

To find the whole, use the formula: Whole = Part / (Percent / 100). In this case, Whole = 30 / (60 / 100) = 50.

Front

What is 10% of 200?

Back

10% of 200 is 20.

Front

How do you find the percent increase?

Back

Percent Increase = ((New Value - Original Value) / Original Value) x 100.

Front

What is 25% of 80?

Back

25% of 80 is 20.

Front

How do you find the percent decrease?

Back

Percent Decrease = ((Original Value - New Value) / Original Value) x 100.