Scale Factor

If a Scale Factor if greater than 1, then your figure gets...

• Smaller
• Bigger
• Does not change

In a scale drawing of his room, Colin used each inch to represent 10 feet. What is the scale factor from his drawing to his actual room?

• 10

• 1/10

• 9

• 11

Picture: 3 cm

Actual: 12 ft.

What is the scale factor?

The scale from a map to to real life show that 3 cm is 150 yds. What is the scale factor?

• 750

• 3/150

• 50

• 15/3

Colin's scale factor for his drawing was 10. Colin will need to ​ (a)   the length and the width with the ​ (b)   to find the actual length and width of his room.

• multiply
• scale factor
• divide
• add
• subtract
• height
• base

The scale from the actual coin to the photo is 6mm to 2 cm. What is the actual distance across the coin?

• 8 mm.

• .25 mm

• 9.75 mm

• 11.25 mm

Colin's scale factor is 10. In his drawing, the width of his room is 1.25 in. and the length is 1.5 inches long. What would be the actual length and width of his room?

• 10 feet wide and 15 feet long

• 12.5 feet wide and 15 feet long

• 11.25 feet wide and 12.5 feet long

• 8.75 feet wide and 8.5 feet long

Aiden is making a model of the Lincoln Memorial. The height of his model is going to be 20 in. What is the width of his model?

• 50 in.

• 220 in.

• 20 in.

• 10 in.

A rectangle that is 2 inches by 3 inches has been scaled by a factor of 7. What are the side lengths of the scaled copy?

• 5 and 10

• 14 and 21

• 5 and 7

• 9 and10

The distance between two cities on a map is 4.125 inches.  Find the actual distance if the scale on the map is 2 inches = 40 miles.

• 165 miles
• 50 miles
• 82.5 miles
• 41.25 miles