What is percent error?
Topic 3.4 - 3.6 Review

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Mathematics
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7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
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.
2.
FLASHCARD QUESTION
Front
How do you calculate percent error?
Back
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.
3.
FLASHCARD QUESTION
Front
What is 160% of a number?
Back
To find 160% of a number, multiply the number by 1.6. For example, 160% of 98 is 98 * 1.6 = 156.8.
4.
FLASHCARD QUESTION
Front
How do you calculate a percentage of a price?
Back
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.
5.
FLASHCARD QUESTION
Front
What does a discount mean?
Back
A discount is a reduction in the price of a product or service, often expressed as a percentage of the original price.
6.
FLASHCARD QUESTION
Front
How do you calculate the sale price after a discount?
Back
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.
7.
FLASHCARD QUESTION
Front
What is the formula for calculating a percentage?
Back
The formula for calculating a percentage is: (Part / Whole) * 100.
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