Solving Proportions

Flashcard
•
Mathematics
•
6th - 8th 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 mean?
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 result?
Back
The result is a*d = b*c.
5.
FLASHCARD QUESTION
Front
What is the first step in solving the proportion 2/3 = x/6?
Back
The first step is to cross-multiply: 2 * 6 = 3 * x.
6.
FLASHCARD QUESTION
Front
What is the solution to the proportion 2/3 = x/6?
Back
The solution is x = 4.
7.
FLASHCARD QUESTION
Front
If 5/x = 10/20, how do you solve for x?
Back
Cross-multiply to get 5 * 20 = 10 * x, which simplifies to x = 10.
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