Percentages

Front

What is a percentage?

Back

A percentage is a fraction expressed as a part of 100. It represents how much of a whole is being considered.

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) and then divide by 100.

Front

What is the formula to find what percent one number is of another?

Back

The formula is: (Part/Whole) x 100 = Percentage.

Front

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

Back

There are 20 girls in the class.

Front

What percentage is 20 out of 50?

Back

40%.

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 by 100.

Front

What is the percentage of green apples if there are 65 green apples out of 100?

Back

65%.

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.

Front

What is the percentage decrease formula?

Back

Percentage decrease = (Original Value - New Value) / Original Value x 100.

Front

If 78 is what percent of 450, how do you find the answer?

Back

Use the formula: (Part/Whole) x 100 = Percentage. Here, (78/450) x 100 = 17%.