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 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 is the formula to find the percentage given a part and a whole?

Back

Percentage = (Part / Whole) x 100.

Front

If 15 out of 60 students passed a test, what percent passed?

Back

Percentage = (15 / 60) x 100 = 25%.

Front

What does it mean if a number is 80% of another number?

Back

It means that the first number is 80 parts out of 100 of the second number.

Front

How do you find what number a percentage represents?

Back

To find the number that a percentage represents, divide the part by the percentage (in decimal form). For example, if 20 is 80% of a number, the number is 20 / 0.80 = 25.

Front

What is a tip in terms of percentage?

Back

A tip is a percentage of the total bill that is given as a reward for service.

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and multiply by 100. For example, 3/4 = (3 ÷ 4) x 100 = 75%.

Front

If you give away 5 out of 25 items, what percent did you give away?

Back

Percentage = (5 / 25) x 100 = 20%.

Front

What is the relationship between percentages, fractions, and decimals?

Back

Percentages, fractions, and decimals are different ways to represent the same value. For example, 50% = 0.50 = 1/2.