Percents Basics for Study

Front

What is a percent?

Back

A percent is a way of expressing a number as a fraction of 100. It is denoted by the symbol '%'.

Front

How do you calculate the percent of a number?

Back

To calculate the percent of a number, multiply the number by the percent (in decimal form) and then divide by 100.

Front

What is 10% of 50?

Back

5

Front

What is the formula to find the percent increase?

Back

Percent Increase = ((New Value - Original Value) / Original Value) x 100.

Front

What is the formula to find the percent decrease?

Back

Percent Decrease = ((Original Value - New Value) / Original Value) x 100.

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 then multiply by 100.

Front

What is 25% of 200?

Back

50

Front

If 15% of a number is 30, what is the number?

Back

200 (because 30 = 0.15 * Number, so Number = 30 / 0.15).

Front

What is the relationship between decimals and percents?

Back

Percents are decimals multiplied by 100. For example, 0.75 is 75%.

Front

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

Back

Divide the first number by the second number and multiply by 100.