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 determine if two ratios form a proportion?
Back
Two ratios form a proportion if the cross products are equal.
3.
FLASHCARD QUESTION
Front
What is the cross product of the ratios a/b and c/d?
Back
The cross product is ad and bc. If ad = bc, then a/b = c/d is a proportion.
4.
FLASHCARD QUESTION
Front
If 3/4 = x/16, what is the value of x?
Back
x = 12.
5.
FLASHCARD QUESTION
Front
What is the formula to solve for a missing value in a proportion?
Back
If a/b = c/d, then ad = bc.
6.
FLASHCARD QUESTION
Front
If a recipe requires 2 cups of flour for every 3 cups of sugar, what is the ratio of flour to sugar?
Back
The ratio of flour to sugar is 2:3.
7.
FLASHCARD QUESTION
Front
How many quizzes will Harold have to attend to reach 20 quizzes if he takes 8 quizzes in 2 weeks?
Back
Harold will have to attend 5 weeks.
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