Pre-Algebra
Chapter 9 Practice Test
Name ___________________ Period _____
Evaluate the expression.
____
____
1.
a. 40
b. 8
c. –40
d. 20
a. 2048
b. 8
c. 68
d. 136
2.
Simplify the expression.
____
____
____
3.
a.
b.
c.
d.
a.
b.
c.
d.
a. 216
b. 46,656
c. 7,776
d.
4.
5.
Simplify the expression. Write your answer as a power.
____
____
6.
a.
b.
c.
d.
a.
b.
c.
d.
7.
Evaluate the expression.
____
8.
a. 64
b.
___
1
64
c.
1
2
d. 1
16
9.
a.
25
b. 25
c.
1
25
d.
1

25
Write your answer in standard form.
____ 10. There are
centimeters in one kilometer. How many centimeters are there in 7.6 kilometers?
a. 0.000076 cm
b. 760,000 cm
c. 76,000 cm
d. 7,600,000 cm
Write the number in standard form.
____ 11.
a. 87,000,000
b. 870,000
c. 8,700,000
d. 52,200,000
a. 0.0019
b. 0.019
c. 0.0057
d. 0.00019
____ 12.
Write the number in scientific notation.
____ 13. 0.0000003554
a.
b.
c.
d.
____ 14. 95,500
a.
b.
c.
d.
Add or subtract. Write your answer in scientific notation.
6
6
____ 15. 2.36  10 + 8.07  10
a. 1.043  105
b. 1.043  1011
c. 1.043  104
d. 1.043  106
Multiply. Write your answer in scientific notation.
____ 16.
a.
b.
____ 17. The steps Antonio took to write 4.0  10
order to write the number clearly?
c.
d.
in standard form are given below. What should Antonio change in
a. Keep 4.1 and attach three zeros at the end.
b. Move the decimal point one place to the right and attach three zeroes at the end of 41.
c. Multiply 10 times –3 and then multiply the product by 4.1.
d. Move the decimal point three places to the left.
____ 18. About how many times greater is the thickness of a nickel than the thickness of a dollar bill?
Item
Thickness
(in centimeters)
Penny
1.55  101
Nickel
1.95  101
Dime
1.35  101
Quarter
1.75  101
Half dollar
2.15  101
Dollar bill
1.0922  102
a. about 1.79 times greater
c. about 17.85 times greater
b. about 0.56 times greater
d. about 0.06 times greater
19. A hummingbird beats its wings at an average rate of
beats per second for 4 hours. There are
seconds in 4 hours. How many times does the hummingbird beat its wings in that time?
Write the product using exponents.
20.
21.
22. A blizzard drops 30 inches of snow in one day. At the end of each of the next three days, the depth of the snow
is
of the depth of the previous day. Write an expression for the depth of the snow after the third day of
melting. What was the depth (in inches)? Round your answer to the nearest tenth.
Simplify the expression.
23.
24.
Simplify. Write the expression using only positive exponents.
25.
26.
Simplify. Write the expression using only positive exponents.
28.
27.
29. Using the table, how many grams are in a metric ton?
Unit of Mass
metric ton
Mass
kg
gram
kg
milligram
kg
microgram
kg
30. A lake contains
gallons of water in the spring. About 3.6% of the water evaporates during the
summer. How much water evaporates?
Answer Section
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
D
C
C
B
D
C
D
B
C
B
C
A
C
C
A
A
D
C
19. 864,000
20.
21.
22.
; 15.4 in.
23. 4y
24.
25.
26.
27.
28.
29. 1,000,000 g
30. 2,088,000 gal