Scale Factor

If the scale factor is less than one, the new figure will be

• an enlargement
• a reduction
• a scale factor
• bigger

Tags

CCSS.8.G.A.3

If the scale factor is greater than one, the new figure will be

• a reduction
• an enlargement
• a scale
• not proportional

Tags

CCSS.8.G.A.3

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

Tags

CCSS.6.RP.A.3B

The two rectangles are scale drawings. What is the measurement of x?

• 21
• 1.25
• 20
• 4

Tags

CCSS.7.RP.A.2C

A map has a scale of 1 cm=5km.  On the map, two cities are 3 cm apart. What is the actual distance between these cities? 

• 1.7 km
• 5 km
• 15 km
• 17 km 

Tags

CCSS.7.RP.A.2C

An area rug is 9 feet wide. In a photograph, the image of the rug is 3 inches wide. What is the scale of the model?

• one inch = 3 feet

• one inch = .33 feet

• one inch = 36 inches

Tags

CCSS.7.RP.A.2C

A scale factor of 2 is used to enlarge the dimensions of a square. What is the effect of this change on the area of the square?

• The area will be half as big.

• The area will be twice as large.

• The area will be 4 times larger.

• The area will be 8 times larger.

• The area will not change.

Tags

CCSS.7.G.A.1

Stefano holds up an 8-inch pencil 32 inches from his eye. The pencil fills the image of a sculpture that is 40 feet away. How tall is the sculpture?

• 10

• 8

• 22

• 14

• 16

Tags

CCSS.HSG.SRT.B.5