Topic 3.4 - 3.6 Review

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What is percent error?

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Percent error is a measure of how inaccurate a measurement is, expressed as a percentage of the true value. It is calculated using the formula: Percent Error = |(Estimated Value - Actual Value)| / Actual Value * 100.

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How do you calculate percent error?

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To calculate percent error, subtract the actual value from the estimated value, take the absolute value of the result, divide by the actual value, and multiply by 100.

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What is 160% of a number?

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To find 160% of a number, multiply the number by 1.6. For example, 160% of 98 is 98 * 1.6 = 156.8.

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How do you calculate a percentage of a price?

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To calculate a percentage of a price, multiply the price by the percentage (in decimal form). For example, to find 4.5% of $56, calculate 56 * 0.045 = $2.52.

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What does a discount mean?

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

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How do you calculate the sale price after a discount?

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To calculate the sale price after a discount, subtract the discount amount from the original price. For example, if an item costs $85 and has a 40% discount, the discount amount is $85 * 0.40 = $34, so the sale price is $85 - $34 = $51.

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What is the formula for calculating a percentage?

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The formula for calculating a percentage is: (Part / Whole) * 100.

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What is the meaning of 'actual value' in measurements?

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The actual value is the true or correct value of a quantity, as opposed to an estimated or measured value.

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What is the meaning of 'estimated value' in measurements?

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The estimated value is the value that is approximated or guessed, which may not be accurate.

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How do you express a percentage as a decimal?

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To express a percentage as a decimal, divide the percentage by 100. For example, 25% as a decimal is 0.25.