Percent Bar Practice

Front

What is a percent?

Back

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

Front

How do you calculate a percentage of a number?

Back

To calculate a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 25% of 200, calculate 200 x 0.25 = 50.

Front

What does it mean to find 'how many more' of something?

Back

Finding 'how many more' means determining the difference between the total amount desired and the amount currently available.

Front

If 3 teaspoons of sugar is 25% of the total, how do you find the total amount?

Back

To find the total amount, divide the part (3 teaspoons) by the percentage (0.25). Total = 3 / 0.25 = 12 teaspoons.

Front

What is 40% of a number?

Back

To find 40% of a number, multiply the number by 0.40. For example, 40% of 70 is 70 x 0.40 = 28.

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, 75% becomes 0.75.

Front

What is the formula to find a percentage increase?

Back

Percentage increase = (New Value - Original Value) / Original Value x 100.

Front

What is the formula to find a percentage decrease?

Back

Percentage decrease = (Original Value - New Value) / Original Value x 100.

Front

If you have 24 lemons and want to use 75%, how many lemons do you need?

Back

To find 75% of 24, multiply 24 by 0.75. 24 x 0.75 = 18 lemons.

Front

What does it mean if 40% of something is not working?

Back

It means that 60% of that thing is functioning properly, as 100% - 40% = 60%.