Percent!

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What is a percent?

Back

A percent is a way of expressing a number as a fraction of 100. It is denoted by the symbol '%'. For example, 50% means 50 out of 100.

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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 x 0.20 = 10.

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What does it mean if an item is on sale for a certain percent off?

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If an item is on sale for a certain percent off, it means that the price is reduced by that percentage of the original price. For example, if a $100 item is 20% off, the discount is $20.

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How do you find the original price after a discount?

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To find the original price after a discount, divide the amount saved by the discount percentage (in decimal form). For example, if you saved $40 and the discount was 20%, the original price is $40 ÷ 0.20 = $200.

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What is the formula to find the percentage of a total?

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The formula to find the percentage of a total is: (Part/Total) x 100. For example, if there are 30 girls out of 150 students, the percentage of girls is (30/150) x 100 = 20%.

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How do you estimate a percentage of a range of numbers?

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To estimate a percentage of a range, find the average of the range and then calculate the percentage. For example, for 80 to 120 elk, the average is 100, and 30% of 100 is 30.

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What is the relationship between fractions and percentages?

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Fractions and percentages are two ways to represent the same concept. A fraction can be converted to a percentage by multiplying by 100. For example, 1/4 = 0.25 = 25%.

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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, 25% as a decimal is 25 ÷ 100 = 0.25.

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What is a real-world example of using percentages?

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A real-world example of using percentages is calculating sales tax. If an item costs $50 and the sales tax is 8%, the total cost is $50 + (50 x 0.08) = $54.

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How do you find the percentage of a group that meets a certain criterion?

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To find the percentage of a group that meets a certain criterion, divide the number of individuals meeting the criterion by the total number of individuals, then multiply by 100.