Percent of a Number

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). For example, to find 20% of 50, calculate 50 * 0.20 = 10.

Front

What does it mean if 20% of a number is given?

Back

It means that the value is one-fifth of the total number, as 20% is equivalent to 1/5.

Front

If 14 is 20% of a number, how do you find the total number?

Back

To find the total number, divide 14 by 0.20. Total number = 14 / 0.20 = 70.

Front

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

Back

The formula is: Whole Number = Part / (Percent in decimal form).

Front

If 42 is 60% of a number, how do you find that number?

Back

Divide 42 by 0.60. Number = 42 / 0.60 = 70.

Front

What is 25% of 100?

Back

25% of 100 is 25, because 100 * 0.25 = 25.

Front

If 15% of a number is 45, how do you find the number?

Back

Divide 45 by 0.15. Number = 45 / 0.15 = 300.

Front

How do you find the number of girls in a class if 40% are girls and there are 80 students?

Back

Calculate 40% of 80: 80 * 0.40 = 32 girls.

Front

What does it mean if a number is described as a 'part' in a percent problem?

Back

The 'part' is the portion of the whole that is being considered in relation to the percent.