Percent of a Number Pre Test

Front

What does 'percent' mean in mathematics?

Back

Percent means 'per hundred' and is a way to express a number as a fraction of 100.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide the percentage by 100.

Front

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

Back

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

Front

What is 100% of a number?

Back

100% of a number is the number itself.

Front

How do you find 50% of a number?

Back

To find 50% of a number, divide the number by 2.

Front

What is 10% of a number?

Back

To find 10% of a number, divide the number by 10.

Front

How do you calculate 25% of a number?

Back

To calculate 25% of a number, divide the number by 4.

Front

What is the relationship between percentages and fractions?

Back

Percentages can be converted to fractions by placing the percentage over 100 and simplifying.

Front

How do you calculate the percentage increase from one number to another?

Back

Percentage increase = ((New Number - Original Number) / Original Number) * 100.

Front

What is the percentage decrease formula?

Back

Percentage decrease = ((Original Number - New Number) / Original Number) * 100.