Percent Change and Percent Error
Flashcard
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is percent change?
Back
Percent change is a measure of how much a quantity has increased or decreased relative to its original amount, expressed as a percentage.
2.
FLASHCARD QUESTION
Front
How do you calculate percent change?
Back
Percent change is calculated using the formula: Percent of change = (amount of change / original amount) x 100.
3.
FLASHCARD QUESTION
Front
What does a positive percent change indicate?
Back
A positive percent change indicates an increase in the quantity.
4.
FLASHCARD QUESTION
Front
What does a negative percent change indicate?
Back
A negative percent change indicates a decrease in the quantity.
5.
FLASHCARD QUESTION
Front
If the price of an item decreases from $100 to $80, what is the percent change?
Back
Percent change = ((80 - 100) / 100) x 100 = -20% (decrease).
6.
FLASHCARD QUESTION
Front
If the population of a town increases from 1,000 to 1,200, what is the percent increase?
Back
Percent increase = ((1200 - 1000) / 1000) x 100 = 20%.
7.
FLASHCARD QUESTION
Front
What is the formula for calculating percent error?
Back
Percent error = (|estimated value - actual value| / actual value) x 100.
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