Tax, Tip and Discounts

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What is sales tax?

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Sales tax is a percentage of the price of goods or services that is added to the total cost at the time of purchase.

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CCSS.6.RP.A.3C

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How do you calculate sales tax?

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

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CCSS.6.RP.A.3B

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If an item costs $50 and the sales tax is 8%, what is the total cost?

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Total cost = $50 + ($50 * 0.08) = $54.

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CCSS.6.RP.A.3C

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What does it mean to apply a discount?

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Applying a discount means reducing the original price of an item by a certain percentage or amount.

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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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Sale price = Original price - (Original price * Discount rate).

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CCSS.6.RP.A.3C

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If a shirt costs $40 and has a 25% discount, what is the sale price?

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Sale price = $40 - ($40 * 0.25) = $30.

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CCSS.6.RP.A.3C

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What is a tip?

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A tip is a small amount of money given to someone for their service, usually 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).

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CCSS.6.RP.A.3C

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If a restaurant bill is $60 and you want to leave a 15% tip, how much is the tip?

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Tip = $60 * 0.15 = $9.

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CCSS.6.RP.A.3C

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What is the relationship between percentages and decimals?

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To convert a percentage to a decimal, divide by 100.