Percent Application

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 x 0.20 = 10.

Front

What does 'discount' mean in terms of percent?

Back

A discount is a reduction in the original price of an item, expressed as a percentage of that price.

Front

How do you find the sale price after a discount?

Back

To find the sale price, subtract the discount amount from the original price. Sale Price = Original Price - Discount Amount.

Front

What is a tip in the context of dining?

Back

A tip is a small amount of money given to service workers, typically calculated as a percentage of the total bill.

Front

How do you calculate a tip?

Back

To calculate a tip, multiply the total bill by the tip percentage (in decimal form). For example, for a $20 bill with a 15% tip, calculate 20 x 0.15 = $3.

Front

What is the formula for calculating percentage error?

Back

Percentage Error = (|Estimated Value - Actual Value| / Actual Value) x 100%.

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 multiply by 100. For example, 1/4 = (1 ÷ 4) x 100 = 25%.

Front

What is the original price if an item is sold for $40 at a 20% discount?

Back

To find the original price, divide the sale price by (1 - discount rate). Original Price = Sale Price / (1 - 0.20) = 40 / 0.80 = $50.

Front

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

Back

Fractions, decimals, and percentages are different ways to represent the same value. For example, 1/2 = 0.5 = 50%.