Proportions Using Models

Which graph is proportional?

• A

• B

• C and D

• All of the graphs are proportional

Tags

CCSS.7.RP.A.2D

Using the information on the Reteach worksheet, what is a scale model?

• a proportional two-dimensional drawing of an object.

• a proportional, three-dimensional model of an object.

Tags

CCSS.7.RP.A.2C

Using the information on the Reteach worksheet, The measurements in scale drawings and models are proportional to what?

• the measurements of the actual object

• the measurements of the model of the object

• the measurements of the scale of the object

Tags

CCSS.7.RP.A.2C

Scale: 1in.=7ft. The actual width of the backyard is 49 ft, how wide is it in the drawing?

• 14 in 

• 7 in

• 42 in

• 56 in

Tags

CCSS.7.RP.A.2C

The ratio of black keys to white keys on a piano is 5 to 7.  Complete the table to create additional equivalent ratios.​

d

c

e

f

63

55

35

28

21

84

A model of a planned baseball stadium is 2 ft wide. The actual stadium will be 200 yd wide. What is the scale?

• 2 feet = 50 yards

• 1 foot = 200 yards

• 1 foot = 100 yards

• 1 foot = 50 yards

Tags

CCSS.7.RP.A.2C

A scale model of a whale is being built. The actual length of the whale is 65 feet. The scale of the model is 2 in : 3 ft. What will be the length of the model?

• 97.5 inches

• 30.6 inches

• 41.56 inches

• 43.33 inches

Tags

CCSS.6.RP.A.3B

A particular giraffe is 16 ft tall. A model of it was built with a scale of 1 in : 2 ft. How tall is the model?

• 13 in 

• 1 in 

• 3 in 

• 8 in 

Tags

TEKS.MATH.6.5A

The ratio of black keys to white keys on a piano is 5 to 7.  Complete the table to create additional equivalent ratios.

d

c

e

f

55

28

21

63

84

35

Your scale is 1 inch to 5 miles. If the drawing shows a road that is 2 inches long, how many miles is the actual road?

• 5 miles

• 2.5 miles

• 10 miles

• 7 miles

Tags

CCSS.7.RP.A.2C