Scale Factor and Proportions Exam

Flashcard
•
Mathematics
•
7th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a scale factor?
Back
A scale factor is a number that scales, or multiplies, some quantity. It is used to determine how much larger or smaller a figure is compared to another figure.
2.
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 one figure by the corresponding length of a side of the other figure.
3.
FLASHCARD QUESTION
Front
What is a proportion?
Back
A proportion is an equation that states that two ratios are equal.
4.
FLASHCARD QUESTION
Front
How do you solve a proportion?
Back
To solve a proportion, cross-multiply the two ratios and then solve for the unknown variable.
5.
FLASHCARD QUESTION
Front
If the scale factor is 1/2, what does that mean?
Back
It means that the new figure is half the size of the original figure.
6.
FLASHCARD QUESTION
Front
What is the relationship between scale factor and area?
Back
The area of similar figures is proportional to the square of the scale factor.
7.
FLASHCARD QUESTION
Front
If the scale factor is 3, how does it affect the dimensions of a shape?
Back
Each dimension of the shape is multiplied by 3, making the shape three times larger.
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