Percentages and Decimal Conversions

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. It is often used to compare proportions.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide the percentage by 100. For example, 35% becomes 0.35.

Front

What is the formula to calculate the percent increase?

Back

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

Front

If 42 is 25% of a number, how do you find that number?

Back

To find the number, divide 42 by 0.25 (or multiply by 4). The number is 168.

Front

How do you calculate 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 percent decrease formula?

Back

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

Front

Convert 0.75 to a percentage.

Back

0.75 as a percentage is 75%.

Front

What is 50% of 200?

Back

50% of 200 is 100.

Front

If a price decreases from $25 to $15, what is the percent decrease?

Back

The percent decrease is 40%.

Front

What does it mean if a number is increased by 20%?

Back

It means the number is multiplied by 1.20 (original number + 20% of original number).