Consumer Math: 5-1 & 5-2 Notecard Check-In

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What is sales tax?

Back

Sales tax is a percentage of the purchase price that is added to the total cost of an item, collected by the seller and paid to the government.

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CCSS.6.RP.A.3C

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How do you calculate sales tax?

Back

To calculate sales tax, multiply the purchase price by the sales tax rate (as a decimal). For example, for a $199.95 item with a 9% tax: $199.95 x 0.09 = $18.00.

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CCSS.6.RP.A.3D

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What is a unit price?

Back

Unit price is the cost per single unit of measure, allowing consumers to compare prices of different sizes or quantities.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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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. For example, a 36-ounce jar costing $5.62 has a unit price of $5.62 / 36 = $0.16 per ounce.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the formula for calculating the total purchase price including sales tax?

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Total Purchase Price = Purchase Price + (Purchase Price x Sales Tax Rate).

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CCSS.6.RP.A.3C

Front

If an item costs $990 and the sales tax is 9%, what is the total cost?

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Total Cost = $990 + ($990 x 0.09) = $1,079.10.

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CCSS.6.RP.A.3C

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What is the cost per item in a multi-pack purchase?

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Cost per item = Total Cost of the pack / Number of items in the pack.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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If a 4-pack of erasers costs $2.17, what is the cost per eraser?

Back

Cost per eraser = $2.17 / 4 = $0.54 per eraser.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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What is the significance of comparing unit prices?

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Comparing unit prices helps consumers determine the best value for their money when purchasing items of different sizes or brands.

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CCSS.6.RP.A.3B

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How do you convert a percentage to a decimal?

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To convert a percentage to a decimal, divide by 100. For example, 9% becomes 0.09.