1.
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.
No odd numbers are divisible by 4.
D.
Since 10 = 2 × 5, a number divisible by 10 is also divisible by 2 and by 5.
Hint
2.
Write x
6
as a multiplication expression.
A.
x
·
x
·
x
·
x
· x ·
x
B.
6
x
C.
D.
6 · 6 · 6 · 6 · 6 · 6
Hint
3.
In the expression (-4)
2
, -4 is called the ______.
A.
power
B.
exponent
C.
base
D.
product
Hint
4.
What is the complete factorization of -168?
A.
-1 · 2 · 3 · 4 · 7
B.
-1 · 2
3
· 3 · 7
C.
-1 · 2 · 3
2
· 7
D.
-1 · 2 · 3 · 7
Hint
5.
Find the greatest common factor of 64
ab
3
c
2
and 48
a
2
b
2
c
.
A.
16
abc
B.
16
ab
2
c
C.
8
ab
3
c
D.
8
a
2
b
2
c
2
Hint
6.
Simplify
A.
B.
C.
D.
Hint
7.
Simplify
A.
B.
C.
2
ab
2
D.
Hint
8.
Evaluate the expression 5
n
4
m
-2
if
m
= 6 and
n
= 3.
A.
B.
-5
C.
D.
-20
Hint
9.
The number 462 is divisible by which of the following?
A.
None of these
B.
10
C.
6
D.
5
Hint
10.
Write the prime factorization of 500.
A.
5 · 10
2
B.
2
4
· 5
2
C.
2
3
· 5
2
D.
2
2
· 5
3
Hint
11.
Find the GCF of 16
a
3
b
2
and 12
a
2
b
.
A.
4
ab
B.
4
a
2
b
C.
2
a
2
b
D.
2
ab
Hint
12.
Simplify
A.
B.
Already simplified
C.
D.
Hint
13.
Find
A.
10
2
B.
1
2
C.
10
12
D.
1
12
Hint
14.
Evaluate
x
-4
if
x
= 3.
A.
-81
B.
81
C.
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 35,329 in scientific notation.
A.
3.5329 × 10
4
B.
3.5329 × 10
5
C.
35.329 × 10
3
D.
3.5329 × 10
-4
Hint