Percent of Numbers

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, 25% means 25 out of 100.

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 50% of a number?

Back

50% of a number is half of that number. For example, 50% of 80 is 40.

Front

What does it mean to find 20% of a total?

Back

Finding 20% of a total means calculating one-fifth of that total. For example, 20% of 100 is 20.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide the percentage by 100. For example, 75% as a decimal is 0.75.

Front

What is the formula to find the percentage of a number?

Back

The formula to find the percentage of a number is: (Percentage / 100) * Total Number.

Front

If a class has 30 students and 40% are girls, how many girls are in the class?

Back

12 girls. (30 * 0.40 = 12)

Front

What is 10% of 200?

Back

20. (200 * 0.10 = 20)

Front

How do you find the total when given a percentage and the part?

Back

To find the total, divide the part by the percentage (in decimal form). For example, if 30 is 15% of a total, the total is 30 / 0.15 = 200.

Front

What is 25% of 160?

Back

40. (160 * 0.25 = 40)