Percents, Percents, Percents!!

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 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 x 0.20 = 10.

Front

What is the formula for percent change?

Back

Percent Change = ((New Value - Old Value) / Old Value) x 100.

Front

What is 40% of 200?

Back

80.

Front

What is 12% of 40?

Back

4.8.

Front

What is 19% of 50?

Back

9.5.

Front

If a class has 27 students and increases to 30, what is the percent change?

Back

11%.

Front

How do you find the tip amount based on a percentage?

Back

To find the tip amount, multiply the total bill by the tip percentage (in decimal form). For example, for a $6.68 bill with a 23% tip, calculate 6.68 x 0.23 = 1.54.

Front

What does it mean if a price is marked down by 25%?

Back

It means the price is reduced by 25 out of every 100 units of the original price.

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 multiply by 100. For example, 1/4 = 0.25 x 100 = 25%.