Unit 3 review Scale and scale factor

What is the value of x?

• 84

• 11

• 12

• 77

What is the scale factor going from the large triangle to the small triangle?

• 6

• 7

• 1/6

• 1/7

Tags

CCSS.7.G.A.1

If a child wants to enlarge there toy from 18cm to 54cm, what scale factor should they use?

• 2

• 2.5

• 3

• 3.5

If a student wants to shrink a poster from 25cm to 9cm wide, which of the following scale factors would they choose?

• 9/25

• 9

• 25

• 25/9

Which of these comparisons proves that these two triangles are NOT similar?

• 
• 
• 
• 

Darwin has a large aquarium that is 4ft by 6ft by 8ft for length, width, and height. He made a model of this where the length is 2 inches. What is the height of the model?

• 1 inch

• 2 inches

• 3 inches

• 4 inches

A model airplane is scaled so that 1/8in is equivalent to 1/4ft. if the model of the wing is 3and1/4 inches long, how many feet long is the real wing?

• 6

• 6.5

• 7

• 7.5

What is the scale factor going from the small triangle to the large triangle?

• 6

• 7

• 1/6

• 1/7

Tags

CCSS.7.G.A.1

A model airplane is scaled so that 1/8in is equivalent to 1/4ft. if the model of the wing is 2and1/4 inches long, how many feet long is the real wing?

• 8.5

• 8

• 4

• 4.5

Darwin has a large aquarium that is 4ft by 6ft by 8ft for length, width, and height. He made a model of this where the length is 1 inch. What is the width of the model?

• 1 inch

• 1.5 inches

• 3 inches

• 3.5 inches