Solving 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 solve a proportion?
Back
To solve a proportion, cross-multiply the terms and then isolate the variable.
3.
FLASHCARD QUESTION
Front
What does cross-multiplication involve?
Back
Cross-multiplication involves multiplying the numerator of one ratio by the denominator of the other ratio.
4.
FLASHCARD QUESTION
Front
If a/b = c/d, what is the cross-multiplication equation?
Back
The cross-multiplication equation is a * d = b * c.
5.
FLASHCARD QUESTION
Front
What is the first step in solving the proportion 3/x = 6/12?
Back
The first step is to cross-multiply: 3 * 12 = 6 * x.
6.
FLASHCARD QUESTION
Front
What is the solution to the proportion 3/x = 6/12?
Back
The solution is x = 6.
7.
FLASHCARD QUESTION
Front
What is the value of k in the proportion 4/k = 2/8?
Back
The value of k is 16.
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