percentages

Front

What is a percentage?

Back

A percentage is a way of expressing a number 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 25% of 400, calculate 400 x 0.25 = 100.

Front

What does '25% off' mean?

Back

'25% off' means that the price is reduced by 25% of the original price. For example, if an item costs $15, a 25% discount means you save $3.75, making the new price $11.25.

Front

How do you calculate a tip as a percentage?

Back

To calculate a tip, multiply the total bill by the tip percentage (in decimal form). For example, for a $65.41 bill with a 20% tip, calculate 65.41 x 0.20 = 13.08.

Front

What is the formula to find the final price after a discount?

Back

Final Price = Original Price - (Original Price x Discount Percentage). For example, if the original price is $76 and the discount is 15%, the final price is 76 - (76 x 0.15) = 64.60.

Front

Calculate 25% of 400.

Back

100

Front

Calculate 20% of 75.

Back

15

Front

If a shirt costs $40 and is on sale for 30% off, what is the sale price?

Back

Sale Price = 40 - (40 x 0.30) = 28.

Front

What is the relationship between fractions and percentages?

Back

Fractions can be converted to percentages by multiplying by 100. For example, 1/4 = 0.25 = 25%.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide by 100. For example, 25% = 25 ÷ 100 = 0.25.