1.
Which number is divisible by 2, 3, and 5?
A.
945
B.
1230
C.
3100
D.
2052
Hint
2.
Find
y
for
y
=
x
2
- 15 if
x
= 6.
A.
51
B.
-3
C.
21
D.
49
Hint
3.
Factor 144 completely.
A.
3 · 3 · 4 · 4
B.
12 · 12
C.
2 · 2 · 2 · 2 · 3 · 3
D.
4 · 4 · 9
Hint
4.
What is the greatest common factor of 45, 75, and 135?
A.
25
B.
15
C.
5
D.
9
Hint
5.
Find the greatest common factor of 64
ab
3
c
2
and 48
a
2
b
2
c
.
A.
16
abc
B.
8
a
2
b
2
c
2
C.
8
ab
3
c
D.
16
ab
2
c
Hint
6.
Simplify
A.
B.
C.
D.
Hint
7.
Write
in simple form.
A.
B.
C.
D.
Hint
8.
Find the quotient
A.
8
-3
B.
8
18
C.
8
3
D.
8
9
Hint
9.
Evaluate the expression 5
n
4
m
-2
if
m
= 6 and
n
= 3.
A.
B.
C.
-20
D.
-5
Hint
10.
Write
in standard form.
A.
0.357682
B.
3,576,820
C.
3.57682
D.
357,682
Hint
11.
The number 462 is divisible by which of the following?
A.
None of these
B.
6
C.
5
D.
10
Hint
12.
Evaluate 7(
a
–
b
)
3
if
a
= 3 and
b
= 1.
A.
8
B.
42
C.
56
D.
28
Hint
13.
Factor 50
x
4
y
.
A.
2 · 5 · 5 ·
x
·
x
·
x
·
y
B.
2 · 5 · 5 ·
x
·
x
·
x
·
x
·
y
C.
2 · 5
2
·
x
4
·
y
D.
2 · 5
2
·
x
2
·
x
2
·
y
Hint
14.
Find
A.
10
12
B.
1
2
C.
10
2
D.
1
12
Hint
15.
Write the expression 5
-4
using a positive exponent.
A.
B.
C.
5
4
D.
-5
4
Hint
16.
Express 35,329 in scientific notation.
A.
3.5329 × 10
4
B.
35.329 × 10
3
C.
3.5329 × 10
5
D.
3.5329 × 10
-4
Hint