Name __________________________________
Chapter 9 Practice Test - Exponents
Evaluate the expression.
1.
2.
3.
4.
5.
Simplify the expression. Write your answer as a power.
6.
7.
8.
9.
Simplify the expression.
10.
11.
12.
13.
14.
15.
Period _______________
Simplify the expression. Write your answer as a power.
16.
17.
18.
19.
20.
21.
22. Write the power with a base of 5 that is equal to
.
Write your answer in standard form.
23. There are
centimeters in one kilometer. How many centimeters are there in 2.4 kilometers?
24. A cow can produce up to
cows produce in a year?
25. A person breathes in about
meters of air?
Write the number in standard form.
26.
27.
liters of methane and other gases in a year. How many liters can a herd of 40
cubic meters of air per second. How long does it take to breathe in 1.3 cubic
Add or subtract. Write your answer in scientific notation.
7
28. 7.81  10
3
29. 5.12  10
6.16  107
8.81  102
Divide. Write your answer in scientific notation.
5
30. (5.2  10 )
5
(1.3  10 )
5
31. (4.4  10 )
8
(2.2  10 )
Multiply. Write your answer in scientific notation.
32.
33.
34. Each year, more than 425,000,000 gallons of water are used to make man-made snow at a ski resort. Write this
number in scientific notation.
35. A jet aircraft is traveling at a speed of
meters per minute.
a.
How many meters does the jet travel in 9 minutes? Write your answer in standard form.
b.
How many kilometers does the jet travel in 300 minutes? Write your answer in standard form.
36. The table shows the speed of sound through various substances.
Gold
Iron
Rubber
Sea water
Substance
Speed (km/h)
1.2
1.8
5.8
5.5
a.
Through which substance does sound travel fastest?
b.
Through which substance does sound travel slowest?
Copper
1.3
Answer Key
1. 625
1
2. 
1024
1
3. 
343
4. –46
5. –76
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
240,000 cm
14,800,000 L
5,200 sec
430,000
0.00086
1.65  107
4.239  103
4.0  100
2.0  1013
a.
b.
36. a.
b.
gal
117,000 m
3900 km
iron
sea water