1.
Solve the equation
a
= (-5) + 13.
A.
18
B.
8
C.
-8
D.
-18
Hint
2.
Determine which expression is not a monomial.
A.
ab
B.
12
w
(
xy
+
z
)
C.
-14(-
st
)(3
u
)
D.
17
p
(-
qr
)
Hint
3.
Write the expression 4 · 4 · 4 · 4 · 4 using exponents.
A.
4
4
B.
4
5
C.
5
4
D.
5
5
Hint
4.
Express 130,254 in expanded form.
A.
(1 × 10
5
) + (30 × 10
4
) + (2 × 10
2
) + (5 × 10
1
) + (4 × 10
0
)
B.
(1 × 10
6
) + (3 × 10
5
) + (2 × 10
3
) + (5 × 10
2
) + (4 × 10
1
)
C.
(1 × 10
5
) + (3 × 10
4
) + (2 × 10
3
) + (5 × 10
2
) + (4 × 10
1
)
D.
(1 × 10
5
) + (3 × 10
4
) + (2 × 10
2
) + (5 × 10
1
) + (4 × 10
0
)
Hint
5.
Write the ratio 24 to 96 in simplest form.
A.
B.
C.
D.
Hint
6.
Write
in simple form.
A.
B.
C.
D.
Hint
7.
The number 462 is divisible by which of the following?
A.
5
B.
None of these
C.
6
D.
10
Hint
8.
Factor –15
x
2
.
A.
3 · 5 ·
x
·
x
B.
3 · 5 ·
x
2
C.
-1 · 3 · 5 ·
x
2
D.
-1 · 3 · 5 ·
x
·
x
Hint
9.
Find the GCF of 3
x
2
y
2
and 15
xy
.
A.
3
x
2
y
2
B.
3
x
y
2
C.
3
x
2
y
D.
3
xy
Hint
10.
Find the GCF of 16
a
3
b
2
and 12
a
2
b
.
A.
2
ab
B.
4
a
2
b
C.
2
a
2
b
D.
4
ab
Hint
11.
Find 6
3
· 6
2
.
A.
6
6
B.
36
5
C.
6
5
D.
36
6
Hint
12.
Find
x
7
·
x
4
.
A.
xx
11
B.
xx
28
C.
x
28
D.
x
11
Hint
13.
Write the expression
m
-7
using a positive exponent.
A.
m
7
B.
C.
-
m
7
D.
Hint
14.
Evaluate
x
-4
if
x
= 3.
A.
B.
81
C.
-81
D.
Hint
15.
Express 3.456 × 10
-4
in standard form.
A.
34,560
B.
0.003456
C.
0.3456
D.
0.0003456
Hint
16.
Express 1,000,000 in scientific notation.
A.
1 × 10
7
B.
1 × 10
5
C.
1 × 10
6
D.
1 × 10
-6
Hint