7th Grade Math

666 Measurement and Proportional Reasoning

Practice

Chapter Test

Complete. Round to the nearest hundredth if

necessary.

1. 3,600 lb =  T 2. 21 pt =  qt


2. 28 ft =  yd 4. 0.23 g =  mg


3. 0.04 L =  mL 6. 21 in. =  ft


4. MULTIPLE CHOICE The table shows the
   volume of four containers. What is the total
   volume of the four containers in gallons?

Container Volume (oz)

Cup 10

Pitcher 40

Bowl 35

Jug 50

A. 1.5 gal

B. 1.05 gal

C. 0.15 gal

D. 0.11 gal

Complete. Round to the nearest tenth if

necessary.

8. 7.62 yd ≈  m


9. 50.8 lb ≈  kg


10. 3,600 mL ≈  qt


11. 19.25 m ≈  ft


12. SCIENCE The population of bacteria in
    4 differently sized lab dishes are given.
    Which dish has an approximate area of
    1.4 square feet?

Dish Bacteria Area (in^2 )

1 100 205

2 50 125

3 35 175

4 180 300

13. ROLLER COASTER A roller coaster reaches a
    speed of 112.7 kilometers per hour. What is
    the estimated speed in miles per hour?


14. GARDEN The garden below needs to be
    covered with fertilizer. If the owner has
    enough fertilizer to cover 200 square yards,
    will he have enough for the entire garden?
    Explain your reasoning.

30 ft

45 ft

15. PACKING A model of a packing box is below.
    What is the surface area of a similar box that
    is larger by a scale factor of 3?

S.A. = 56 in^2

16. EXTENDED RESPONSE Use the prism
    below.

2 in.

2 in.

2 in.

Part A Find the surface area and volume

of prisms that are larger by a scale factor of

2, 3, 4, and 5.

Part B Compare the surface area to the

volume.

Part C Graph the relationship of the side

length to the volume and the side length to

the surface area.

Part D Do you think that if the solid

were another type of shape, like a

pyramid, cylinder, or cone, you would get

the same results? Why or why not?

662_666_C11_SGR_895130.indd 666 12/30/09 4:44 PM