Checkpoint Review

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What is percent increase?

Back

Percent increase is the amount of increase expressed as a percentage of the original amount. It is calculated using the formula: ((new value - old value) / old value) * 100.

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What is percent decrease?

Back

Percent decrease is the amount of decrease expressed as a percentage of the original amount. It is calculated using the formula: ((old value - new value) / old value) * 100.

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How do you compare prices to find the better buy?

Back

To compare prices, calculate the unit price (price per item) for each option. The option with the lower unit price is the better buy.

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What is a discount?

Back

A discount is a reduction in the price of a product or service, often expressed as a percentage of the original price.

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How do you calculate the final price after a discount?

Back

To calculate the final price after a discount, subtract the discount amount from the original price. Final Price = Original Price - Discount Amount.

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What is sales tax?

Back

Sales tax is a tax imposed by the government on the sale of goods and services, usually calculated as a percentage of the sale price.

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How do you calculate sales tax?

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Sales tax is calculated by multiplying the sale price by the sales tax rate. Sales Tax = Sale Price x Sales Tax Rate.

Front

What is the formula for calculating total cost after tax?

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Total Cost = Original Price + Sales Tax.

Front

What is a unit price?

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Unit price is the cost per single unit of a product, allowing for easy comparison between different quantities and prices.

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How do you find the unit price?

Back

To find the unit price, divide the total price by the number of units. Unit Price = Total Price / Number of Units.