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 75, calculate 75 * 0.20 = 15.

Front

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

Back

Total = Part / (Percent in decimal form). For example, if 18 is 72% of the total, Total = 18 / 0.72 = 25.

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 multiply by 100. For example, 1/4 = (1 ÷ 4) * 100 = 25%.

Front

What is 40% of 60?

Back

40% of 60 is calculated as 60 * 0.40 = 24.

Front

If 3 granola bars represent 25% of the total, how do you find the total number of granola bars?

Back

Total = Part / (Percent in decimal form). Here, Total = 3 / 0.25 = 12.

Front

How do you calculate a tip based on a percentage?

Back

To calculate a tip, multiply the total bill by the tip percentage (in decimal form). For example, for a $28 meal with a 20% tip, Tip = 28 * 0.20 = 5.60.

Front

What does it mean if a student scores 72% on a quiz?

Back

It means the student answered 72 out of every 100 questions correctly, or in this case, 72% of the total questions.

Front

How do you find what percent one number is of another?

Back

To find what percent one number is of another, divide the part by the whole and multiply by 100. For example, to find what percent 24 is of 60, calculate (24 / 60) * 100 = 40%.

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.