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 number?

Back

To calculate the percent of a number, multiply the number by the percent (in decimal form) and then divide by 100.

Front

What is the formula to find the whole when given a part and a percent?

Back

Whole = Part / (Percent / 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 number is 10% of another number?

Back

It means that the first number is one-tenth of the second number.

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 percent increase formula?

Back

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

Front

What is the percent decrease formula?

Back

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

Front

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

Back

There are 18 girls in the class.

Front

What is 5% of 200?

Back

5% of 200 is 10.