Percent Proportion

Front

What is a percent?

Back

A percent is a ratio that compares a number to 100. It is often used to express how much of something there is in relation to a whole.

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 20% of 50, calculate 50 x 0.20 = 10.

Front

What does it mean if 40% of a group is boys?

Back

It means that out of the total number of people in the group, 40 out of every 100 are boys.

Front

If 200 children attended a play and 40% were boys, how many boys attended?

Back

80 boys attended the play.

Front

How do you find what number a percentage represents?

Back

To find what number a percentage represents, divide the part by the percentage (in decimal form). For example, if 26 is 5% of a number, divide 26 by 0.05 to find the number.

Front

What is a tip in a restaurant context?

Back

A tip is a small amount of money given to service workers, usually calculated as a percentage of the total bill.

Front

If Daniel's meal cost $28 and he wants to leave a 20% tip, how much is the tip?

Back

The tip is $5.60.

Front

What is the formula to calculate the total amount after adding a tip?

Back

Total Amount = Meal Cost + Tip Amount.

Front

If Sarah earns $20 a day and spends 30% of her earnings, how much does she spend?

Back

Sarah spends $6.

Front

What does it mean if 2 red pens are 25% of the total number of pens?

Back

It means that if 2 pens represent 25%, then the total number of pens is 8.