
Math 7 Proportions (Flashcard)
Flashcard
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
+3
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 determine if two ratios form a proportion?
Back
Two ratios form a proportion if the cross products are equal.
Tags
CCSS.7.RP.A.2A
3.
FLASHCARD QUESTION
Front
What is the scale in a map?
Back
The scale is the ratio of a distance on the map to the actual distance it represents.
Tags
CCSS.7.RP.A.2C
4.
FLASHCARD QUESTION
Front
If 1 cm on a map represents 8 km in reality, how do you calculate the real distance for 24 cm?
Back
Multiply 24 cm by 8 km/cm to get 192 km.
Tags
CCSS.6.RP.A.3B
5.
FLASHCARD QUESTION
Front
What is the formula to find the missing value in a ratio table?
Back
Use cross-multiplication to find the missing value.
6.
FLASHCARD QUESTION
Front
If 190 people fit in 3 buses, how do you find the number of buses needed for 570 people?
Back
Set up a proportion: 190/3 = 570/x, then solve for x.
Tags
CCSS.7.RP.A.3
7.
FLASHCARD QUESTION
Front
What does it mean if two ratios do not form a proportion?
Back
It means that the cross products of the ratios are not equal.
Tags
CCSS.7.RP.A.2A
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