Math 6 Percent Test Review

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What is a percent?

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A percent is a way of expressing a number as a fraction of 100. It is denoted by the symbol '%'.

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How do you calculate a percentage of a number?

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To calculate a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 20% of 50, calculate 50 * 0.20 = 10.

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What is the formula to find the tip amount?

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Tip Amount = Total Bill * Tip Percentage (in decimal form). For example, if the bill is $35 and the tip is 18%, the tip amount is $35 * 0.18 = $6.30.

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How do you convert a fraction to a percent?

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What is the relationship between fractions, decimals, and percentages?

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How do you find the percent of a total that did not meet a condition?

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To find the percent that did not meet a condition, subtract the percent that did meet the condition from 100%. For example, if 40% completed a project, then 100% - 40% = 60% did not complete it.

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What is sales tax?

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Sales tax is a percentage added to the price of goods and services, collected by the seller and paid to the government. For example, if an item costs $100 and the sales tax is 5%, the total cost is $100 + ($100 * 0.05) = $105.

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How do you calculate the total cost including sales tax?

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Total Cost = Price + (Price * Sales Tax Rate). For example, for a $45 backpack with a 4% sales tax, Total Cost = $45 + ($45 * 0.04) = $46.80.

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