Percentages

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. It is often used to compare proportions.

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 30% of 200, calculate 200 x 0.30 = 60.

Front

What is 50% of 180?

Back

90

Front

What is 25% of 200?

Back

50

Front

If Sarah earns $20 a day and spends 30% of her earnings, how much does she spend?

Back

$6

Front

At a party, if 40% of 150 children had ice-cream, how many had ice-cream?

Back

60 children had ice-cream.

Front

How do you convert a decimal to a percentage?

Back

To convert a decimal to a percentage, multiply the decimal by 100 and add a percent sign. For example, 0.04 x 100 = 4%.

Front

What is 10% of 50?

Back

5

Front

What does it mean if a price is increased by 20%?

Back

It means the new price is 120% of the original price. For example, if the original price is $50, the new price is $50 x 1.20 = $60.

Front

How do you find the percentage increase?

Back

To find the percentage increase, subtract the original value from the new value, divide by the original value, and multiply by 100. Formula: ((New Value - Original Value) / Original Value) x 100.