Scale Factor & Scale Drawings

What is the scale factor if the triangle on the left is the original?

• 2
• 3/2
• 2/3
• 1/2

Tags

CCSS.7.G.A.1

CCSS.7.RP.A.2

What is the scale factor from ΔDEF to ΔABC?

• 1/2
• 7/3
• 2
• 10/3

Tags

CCSS.7.G.A.1

CCSS.7.RP.A.2

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.7.G.A.1

CCSS.7.RP.A.3

Robbie made a scale drawing of a neighborhood park. A soccer field in the park is 14 inches long in the drawing. The actual field is 98 yards long. What is the scale of the drawing?1 inch = _ yards

• 1372
• 5
• 14
• 7

Tags

CCSS.7.G.A.1

CCSS.7.RP.A.2

• 0.25
• 0.5
• 2
• 1/2

Tags

CCSS.7.G.A.1

CCSS.7.RP.A.2

CCSS.7.RP.A.3

A scale drawing that measures 8 units wide and an original that measures 4 units wide has a scale factor of...

• 2:1
• 8:1
• bigger
• 1:2

Tags

CCSS.7.G.A.1

CCSS.7.RP.A.2

If the original is 12 units and the scale factor is 1/4 what is the size of the scale drawing?

• 300
• 4.8
• 3
• 4

Tags

CCSS.7.G.A.1

CCSS.7.NS.A.2

CCSS.7.RP.A.2

Are the rectangular cakes are scale drawings of each other.
Cake 1: (5, 3), (5, 5), (11,3), (11, 5)
Cake 2: (1, 6), (1, 12), (13, 12), (13, 6)
How do you know?

• yes sides are in proportion
• no there is no factor that could be multiplied and get corresponding answers
• no because their areas are different
• yes because they look llike it

Tags

CCSS.7.G.A.1

CCSS.7.G.B.6

CCSS.7.RP.A.2

If the original lengths are multiplied by 2, what are the new coordinates?

• (0, 0), (12, 18), (12, 0)
• (0, 0), (18, 12), (12, 0)
• (0, 0), (12, 18), (0, 12)
• (0, 0), (18, 12), (0, 12)

Tags

CCSS.7.G.A.1

CCSS.7.RP.A.2

CCSS.7.RP.A.3

The scale drawing car length is 3 cm. If the scale is 1 cm:4 ft, what is the actual car length?

• 12 feet
• 16 feet 
• 10 feet
• 4 feet

Tags

CCSS.7.G.A.1

CCSS.7.RP.A.2