Sales Tax, Tips & Discounts

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What is sales tax?

Back

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

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CCSS.6.RP.A.3D

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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 the percentage by 100. For example, 8.25% becomes 0.0825.

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What is a tip?

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A tip is a sum of money given to someone for their service, typically calculated as a percentage of the total bill.

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CCSS.6.RP.A.3C

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How do you calculate a tip?

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To calculate a tip, multiply the total bill by the tip percentage (as a decimal). For example, for a $28 bill with a 20% tip: $28 x 0.20 = $5.60.

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CCSS.6.RP.A.3C

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What is a discount?

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

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CCSS.6.RP.A.3C

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How do you calculate the sale price after a discount?

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To calculate the sale price, subtract the discount amount from the original price. For example, if a video costs $25.95 and is 25% off, the discount is $6.49, making the sale price $19.46.

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CCSS.6.RP.A.3C

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What is the formula for calculating the amount of discount?

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The amount of discount can be calculated using the formula: Discount Amount = Original Price x Discount Rate (as a decimal).

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CCSS.6.RP.A.3C

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If a DVD costs $15 and is marked 10% off, what is the discount amount?

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The discount amount is $1.50, calculated as $15 x 0.10.

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CCSS.6.RP.A.3C

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How do you find the total bill including tip?

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To find the total bill including tip, add the tip amount to the original bill. For example, if the bill is $28 and the tip is $5.60, the total is $33.60.

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CCSS.5.NBT.B.7

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What is the total cost if you want to leave a 23% tip on a $27.31 bill?

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The total cost would be $33.59, calculated as $27.31 + ($27.31 x 0.23).

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CCSS.7.EE.B.3