Percent of Numbers

Front

What is a percent?

Back

A percent is a way to express a number as a fraction of 100. It is denoted by the symbol '%'. For example, 25% means 25 out of 100.

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 * 0.20 = 10.

Front

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

Back

The formula is: Total = Part / (Percentage in decimal form). For example, if 15 is 30% of a total, then Total = 15 / 0.30 = 50.

Front

Convert 1/4 to a percent.

Back

1/4 as a percent is 25%.

Front

If 60 is 75% of a number, what is the number?

Back

The number is 80, because 60 = 0.75 * Number, so Number = 60 / 0.75 = 80.

Front

What does it mean if a number is increased by a certain percent?

Back

Increasing a number by a certain percent means adding that percent of the number to itself. For example, increasing 100 by 20% means adding 20 (which is 20% of 100) to 100, resulting in 120.

Front

What does it mean if a number is decreased by a certain percent?

Back

Decreasing a number by a certain percent means subtracting that percent of the number from itself. For example, decreasing 100 by 20% means subtracting 20 (which is 20% of 100) from 100, resulting in 80.

Front

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

Back

To find what percent one number (Part) is of another number (Whole), use the formula: (Part / Whole) * 100. For example, to find what percent 20 is of 80, calculate (20 / 80) * 100 = 25%.

Front

What is the percent increase from 50 to 75?

Back

The percent increase is 50%, calculated as ((75 - 50) / 50) * 100.

Front

What is the percent decrease from 80 to 60?

Back

The percent decrease is 25%, calculated as ((80 - 60) / 80) * 100.