1.
Determine which expression is not a monomial.
A.
17
p
(-
qr
)
B.
ab
C.
-14(-
st
)(3
u
)
D.
12
w
(
xy
+
z
)
Hint
2.
Choose the false statement.
A.
If a number is divisible by 2 then it is divisible by 4 because 4 = 2 × 2.
B.
All multiples of 9 are divisible by 3 because 9 = 3 × 3.
C.
Since 10 = 2 × 5, a number divisible by 10 is also divisible by 2 and by 5.
D.
No odd numbers are divisible by 4.
Hint
3.
Write x
6
as a multiplication expression.
A.
6 · 6 · 6 · 6 · 6 · 6
B.
x
·
x
·
x
·
x
· x ·
x
C.
D.
6
x
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.
Simplify
A.
B.
C.
D.
Hint
6.
Write the prime factorization of 500.
A.
2
2
· 5
3
B.
2
3
· 5
2
C.
5 · 10
2
D.
2
4
· 5
2
Hint
7.
Factor 39
x
2
y
3
.
A.
3 · 13 ·
x
2
·
y
2
·
y
B.
39 ·
x
·
x
·
y
·
y
·
y
C.
3 · 13 ·
x
·
y
·
y
·
y
D.
3 · 13 ·
x
·
x
·
y
·
y
·
y
Hint
8.
Find the GCF of 17
r
4
s
4
and 23
r
s
4
.
A.
rs
B.
r
s
4
C.
17
r
s
4
D.
r
4
s
4
Hint
9.
Factor 7
x
+ 21.
A.
7
x
(1 + 21)
B.
7(
x
+ 3)
C.
x
(7 + 21)
D.
7(
x
+ 21)
Hint
10.
Four inches is what part of 1 yard? Write you answer as a fraction in simplest form.
A.
B.
C.
D.
Hint
11.
Find 6
3
· 6
2
.
A.
36
6
B.
6
5
C.
6
6
D.
36
5
Hint
12.
Find
x
7
·
x
4
.
A.
xx
11
B.
x
11
C.
xx
28
D.
x
28
Hint
13.
Write
as an expression using a negative exponent.
A.
-2
6
B.
C.
2
-6
D.
Hint
14.
Evaluate
x
-4
if
x
= 3.
A.
B.
81
C.
-81
D.
Hint
15.
Express 2.629 × 10
7
in standard form.
A.
2,629,000
B.
2,629
C.
0.0000002629
D.
26,290,000
Hint
16.
Express 3.456 × 10
-4
in standard form.
A.
0.3456
B.
34,560
C.
0.0003456
D.
0.003456
Hint