What is a percentage?
Percentages

Flashcard
•
Mathematics
•
6th - 8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A percentage is a way of expressing a number as a fraction of 100. It is often used to compare proportions.
2.
FLASHCARD QUESTION
Front
How do you calculate a percentage of a number?
Back
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.
3.
FLASHCARD QUESTION
Front
What does a 25% discount mean?
Back
A 25% discount means that the price is reduced by 25 out of every 100 units of currency. For example, if an item costs $100, a 25% discount would reduce the price to $75.
4.
FLASHCARD QUESTION
Front
How do you find the new price after a discount?
Back
To find the new price after a discount, subtract the discount amount from the original price. For example, if an item costs $100 and has a 20% discount, the discount is $20, making the new price $80.
5.
FLASHCARD QUESTION
Front
What is 80% of 90?
Back
80% of 90 is calculated as 90 x 0.80 = 72.
6.
FLASHCARD QUESTION
Front
What is the formula to calculate percentage error?
Back
Percentage error is calculated using the formula: (|actual value - expected value| / expected value) x 100%.
7.
FLASHCARD QUESTION
Front
If a tarp is 28.4 meters long, what is the acceptable range if the ideal length is 26 meters with a 13% error?
Back
The acceptable range is 26 meters ± 3.38 meters (13% of 26), which means the tarp should be between 22.62 meters and 29.38 meters.
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