
Unit 4 Unit Rate and Proportions

Flashcard
•
Mathematics
•
7th Grade
•
Hard
+7
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a unit rate?
Back
A unit rate is a comparison of two different quantities where one of the quantities is expressed as a quantity of one. For example, if a car travels 300 miles in 5 hours, the unit rate is 60 miles per hour.
Tags
CCSS.6.RP.A.1
CCSS.6.RP.A.2
2.
FLASHCARD QUESTION
Front
What is a proportion?
Back
A proportion is an equation that states that two ratios are equal. For example, if a/b = c/d, then a, b, c, and d are in proportion.
Tags
CCSS.7.RP.A.2A
3.
FLASHCARD QUESTION
Front
How do you find the scale factor between two similar figures?
Back
To find the scale factor, divide the length of a side of the larger figure by the length of the corresponding side of the smaller figure.
Tags
CCSS.7.G.A.1
4.
FLASHCARD QUESTION
Front
What happens to the area of a figure when the scale factor is greater than 1?
Back
When the scale factor is greater than 1, the area of the figure increases by the square of the scale factor.
Tags
CCSS.7.G.A.1
5.
FLASHCARD QUESTION
Front
If the scale factor is 1/2, what happens to the size of the figure?
Back
If the scale factor is 1/2, the figure is reduced to half its original size.
Tags
CCSS.7.G.A.1
6.
FLASHCARD QUESTION
Front
What is the relationship between the scale factor and the dimensions of similar figures?
Back
The dimensions of similar figures are proportional to the scale factor. If the scale factor is k, then each dimension of the figure is multiplied by k.
Tags
CCSS.7.G.A.1
7.
FLASHCARD QUESTION
Front
How do you set up a proportion to solve for an unknown height?
Back
To set up a proportion, use the ratio of the heights to the lengths of the shadows. For example, if a tree's height is to its shadow as a building's height is to its shadow, set it up as: height_tree/shadow_tree = height_building/shadow_building.
Tags
CCSS.7.RP.A.2C
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