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 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 for finding a 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.

Front

What does it mean if a price is discounted by 20%?

Back

It means the price is reduced by 20 out of every 100 units of the original price.

Front

How do you find the percent increase?

Back

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

Front

How do you find the percent decrease?

Back

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

Front

What is a proportion?

Back

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

Front

If 60% of a class are girls and there are 30 students, how many girls are in the class?

Back

There are 18 girls in the class.

Front

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

Back

A percent can be converted to a fraction by dividing by 100 and to a decimal by dividing by 100.