Percent Proportions

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 calculate the percent of a quantity?

Back

To calculate the percent of a quantity, divide the part by the whole and then multiply by 100. Formula: (Part/Whole) x 100.

Front

What is the formula for finding the percent increase?

Back

The formula for percent increase is: ((New Value - Original Value) / Original Value) x 100.

Front

What is the formula for finding the percent decrease?

Back

The formula for percent decrease is: ((Original Value - New Value) / Original Value) x 100.

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 multiply by 100.

Front

What does it mean if a value is 50%?

Back

If a value is 50%, it means that it is half of the whole or that 50 out of every 100 parts are represented.

Front

How do you find what percent one number is of another?

Back

To find what percent one number is of another, divide the first number by the second number and multiply by 100.

Front

What is the relationship between fractions, decimals, and percents?

Back

Fractions, decimals, and percents are different ways to represent the same value. For example, 1/2 = 0.5 = 50%.

Front

How do you find the total amount if you know the percent and the part?

Back

To find the total amount, divide the part by the percent (in decimal form). Formula: Total = Part / (Percent/100).

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.