Solving Proportions
Flashcard
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
+8
Standards-aligned
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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.
Tags
CCSS.7.RP.A.2A
2.
FLASHCARD QUESTION
Front
How do you solve for x in a proportion?
Back
Cross-multiply the ratios and then solve for x.
Tags
CCSS.7.RP.A.2C
3.
FLASHCARD QUESTION
Front
What does it mean if two ratios do not form a proportion?
Back
It means that the two ratios are not equal to each other.
Tags
CCSS.6.RP.A.3A
4.
FLASHCARD QUESTION
Front
If the ratio of boys to girls is 3 to 2, how can you find the number of girls if you know the number of boys?
Back
Use the ratio to set up a proportion: 3/2 = 12/x, then solve for x.
Tags
CCSS.7.RP.A.3
5.
FLASHCARD QUESTION
Front
What is the first step in solving a proportion?
Back
Identify the two ratios that are being compared.
Tags
CCSS.6.RP.A.3A
6.
FLASHCARD QUESTION
Front
What is the formula for finding a missing value in a proportion?
Back
If a/b = c/d, then ad = bc.
Tags
CCSS.7.G.A.1
7.
FLASHCARD QUESTION
Front
How can you check if two fractions are equivalent?
Back
Cross-multiply and see if the products are equal.
Tags
CCSS.3.NF.A.3A
CCSS.3.NF.A.3B
CCSS.4.NF.A.1
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