Percent proportion

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 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 x 0.20 = 10.

Front

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

Back

The formula is: Whole = Part / (Percent in decimal form). For example, if 40 is 50% of a number, the whole is 40 / 0.50 = 80.

Front

What does 'of' mean in percent problems?

Back

In percent problems, 'of' means to multiply. For example, '50% of 200' means 0.50 x 200.

Front

What is the percent proportion?

Back

The percent proportion is a way to express the relationship between a part and a whole as a percentage. It is often written as Part/Whole = Percent/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. For example, 1/4 = (1 ÷ 4) x 100 = 25%.

Front

What is 40% of 50?

Back

20.

Front

If 225 out of 250 seats are sold, what percent of seats are full?

Back

90%.

Front

What is the equation for '50% of what number is 40'?

Back

0.50 x n = 40.

Front

What is 20% of 75?

Back

15.