Percent Equations

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 21% of 60, calculate 60 * 0.21 = 12.6.

Front

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

Back

The formula is: Whole = Part / (Percent / 100). For example, if 12 is 50% of a number, the whole is 12 / 0.5 = 24.

Front

What does it mean if a number is a certain percent of another number?

Back

It means that the first number is that fraction of the second number. For example, if 49 is 35% of a number, it means 49 is 35 out of every 100 parts of that number.

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 relationship between part, percent, and whole?

Back

The relationship is defined as: Part = Percent * Whole. This means that the part is a fraction of the whole based on the percent.

Front

If 34% of a number is 51, how do you find the number?

Back

Use the formula: Number = 51 / (34 / 100) = 151.

Front

What is the first step in solving a percent equation?

Back

Identify whether you are looking for the part, the percent, or the whole.

Front

How do you find the percent when given a part and a whole?

Back

Use the formula: Percent = (Part / Whole) * 100. For example, if the part is 12 and the whole is 24, Percent = (12 / 24) * 100 = 50%.

Front

What is 55% of 134?

Back

To find 55% of 134, calculate 134 * 0.55 = 73.7.