Proportions
Flashcard
•
Mathematics
•
7th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a proportion?
Back
A proportion is an equation that states that two ratios are equal.
2.
FLASHCARD QUESTION
Front
How do you set up a proportion to solve a problem?
Back
To set up a proportion, you can use the formula a/b = c/d, where a and b are the first ratio, and c and d are the second ratio.
3.
FLASHCARD QUESTION
Front
What is the cross-multiplication method in solving proportions?
Back
The cross-multiplication method involves multiplying the numerator of one ratio by the denominator of the other ratio, and setting the two products equal to each other.
4.
FLASHCARD QUESTION
Front
If 3 pounds of hamburger meat cost $6, what is the cost per pound?
Back
The cost per pound is $2, calculated by dividing $6 by 3.
5.
FLASHCARD QUESTION
Front
How do you find the total cost when buying multiple items at a constant rate?
Back
Multiply the cost per item by the number of items purchased.
6.
FLASHCARD QUESTION
Front
What is the formula to estimate a population based on a sample?
Back
The formula is (number of items in sample / total sample size) = (number of items in population / total population size).
7.
FLASHCARD QUESTION
Front
How do you convert currency using an exchange rate?
Back
To convert currency, multiply the amount of money you have by the exchange rate.
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