Tax, Tip, & Discount with DESMOS

Front

What is sales tax?

Back

Sales tax is a percentage of the purchase price that is added to the total cost of an item.

Front

How do you calculate sales tax?

Back

To calculate sales tax, multiply the cost of the item by the sales tax rate (as a decimal).

Front

If a water bottle costs $9.45 and the sales tax is 7%, what is the amount of tax?

Back

$0.66

Front

What is the total cost of an item including sales tax?

Back

Total cost = Item cost + Sales tax.

Front

If Dana buys a computer for $675 with a 7% sales tax, what is the total cost?

Back

$722.25

Front

What is a discount?

Back

A discount is a reduction in the original price of an item.

Front

How do you calculate a discount?

Back

To calculate a discount, multiply the original price by the discount rate (as a decimal).

Front

If new ear buds cost $48 and there is a 10% discount, what is the new cost?

Back

$43.20

Front

What is a tip?

Back

A tip is a percentage of the total cost of a service that is added as a gratuity.

Front

How is a tip calculated?

Back

To calculate a tip, multiply the total cost of the service by the tip percentage (as a decimal).