Percent of A Number Review

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 '%'. For example, 50% means 50 out of 100.

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

Back

The formula is: Total = Part / (Percent / 100). For example, if 20 is 25% of a total, the total is 20 / (25 / 100) = 80.

Front

What is 40% of 200?

Back

80

Front

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

Back

50

Front

What is the relationship between fractions and percents?

Back

Percents are a specific type of fraction where the denominator is always 100. For example, 25% is equivalent to 25/100.

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 = 0.25 = 25%.

Front

What is the percent increase if a price goes from $50 to $65?

Back

30% increase. (65 - 50) / 50 * 100 = 30%.

Front

What is the percent decrease if a price goes from $80 to $60?

Back

25% decrease. (80 - 60) / 80 * 100 = 25%.

Front

How do you find the percent of a total?

Back

To find the percent of a total, divide the part by the total and multiply by 100. For example, if you have 30 out of 150, the percent is (30 / 150) * 100 = 20%.