
Flashcardizz: Unit Review: Percents
Flashcard
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a percent?
Back
A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.
2.
FLASHCARD QUESTION
Front
How do you calculate the percent of a number?
Back
To calculate the percent of a number, multiply the number by the percent (as a decimal). For example, to find 20% of 50, calculate 50 * 0.20 = 10.
3.
FLASHCARD QUESTION
Front
What is simple interest?
Back
Simple interest is calculated using the formula: Interest = Principal x Rate x Time.
4.
FLASHCARD QUESTION
Front
If a student scores 45 out of 60 on a test, what is their percent grade?
Back
75% (calculated as (45/60) * 100).
5.
FLASHCARD QUESTION
Front
What is the formula for calculating percent error?
Back
Percent Error = |(Estimated Value - Actual Value)| / Actual Value x 100.
6.
FLASHCARD QUESTION
Front
How do you find the total number of items if you know the percent?
Back
If you know the percent and the number of items that represent that percent, use the formula: Total = Part / (Percent as a decimal).
7.
FLASHCARD QUESTION
Front
What is the relationship between fractions and percents?
Back
Fractions can be converted to percents by multiplying by 100. For example, 1/4 = 0.25 = 25%.
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