Percentages

Front

What is a percentage?

Back

A percentage is a fraction expressed as a part of 100. It represents how much of one quantity is present in relation to another quantity.

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 * 0.20 = 10.

Front

What is 100% of a number?

Back

100% of a number is the number itself. For example, 100% of 50 is 50.

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and then multiply the result by 100. For example, 1/4 = 0.25, and 0.25 * 100 = 25%.

Front

What is the formula to find the percentage increase?

Back

The formula for percentage increase is: ((New Value - Original Value) / Original Value) * 100.

Front

What is the formula to find the percentage decrease?

Back

The formula for percentage decrease is: ((Original Value - New Value) / Original Value) * 100.

Front

If 40% of a class of 50 students are girls, how many girls are in the class?

Back

To find the number of girls, calculate 40% of 50: 50 * 0.40 = 20 girls.

Front

What is 50% of 1200?

Back

50% of 1200 is 600, calculated as 1200 * 0.50.

Front

How do you find 75% of a number?

Back

To find 75% of a number, multiply the number by 0.75. For example, 75% of 44 is 44 * 0.75 = 33.

Front

What is the relationship between percentages, fractions, and decimals?

Back

Percentages, fractions, and decimals are different ways to represent the same concept of a part of a whole. For example, 50% = 1/2 = 0.5.