Percents

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.

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.

Front

What is the formula to find the sale price after a discount?

Back

Sale Price = Original Price - (Discount Percentage * Original Price).

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, 25% becomes 0.25.

Front

What is 100% of a number?

Back

100% of a number is the number itself.

Front

How do you find the original price before a percentage discount?

Back

To find the original price, divide the sale price by (1 - discount rate). For example, if the sale price is $480 and the discount is 20%, the original price is $480 / 0.80.

Front

What is the relationship between percentages and fractions?

Back

Percentages can be converted to fractions by placing the percentage over 100 and simplifying. For example, 25% = 25/100 = 1/4.

Front

How do you calculate the percentage increase or decrease?

Back

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

Front

What is 125% of a number?

Back

125% of a number is the same as multiplying the number by 1.25.

Front

How do you find what percentage one number is of another?

Back

To find what percentage one number is of another, divide the first number by the second number and multiply by 100.