1.
Choose a tens digit for 2?6 so that the three-digit number is divisible by 6.
A.
0
B.
3
C.
1
D.
2
Hint
2.
Choose the false statement.
A.
No odd numbers are divisible by 4.
B.
If a number is divisible by 2 then it is divisible by 4 because 4 = 2 × 2.
C.
Since 10 = 2 × 5, a number divisible by 10 is also divisible by 2 and by 5.
D.
All multiples of 9 are divisible by 3 because 9 = 3 × 3.
Hint
3.
Write x
6
as a multiplication expression.
A.
B.
6 · 6 · 6 · 6 · 6 · 6
C.
x
·
x
·
x
·
x
· x ·
x
D.
6
x
Hint
4.
Simplify
A.
B.
C.
D.
Hint
5.
Find 3
2
· 3
4
.
A.
3
9
B.
3
8
C.
3
2
D.
3
6
Hint
6.
Evaluate the expression 5
n
4
m
-2
if
m
= 6 and
n
= 3.
A.
B.
-5
C.
-20
D.
Hint
7.
Write 3,458,000 in scientific notation.
A.
0.3458 × 10
6
B.
3458 × 10
3
C.
3.458 × 10
6
D.
3.458 × 10
3
Hint
8.
Evaluate
x
5
- 13 if
x
= -2.
A.
19
B.
-23
C.
-45
D.
3
Hint
9.
Write the prime factorization of 500.
A.
2
4
· 5
2
B.
5 · 10
2
C.
2
3
· 5
2
D.
2
2
· 5
3
Hint
10.
Factor 39
x
2
y
3
.
A.
3 · 13 ·
x
·
x
·
y
·
y
·
y
B.
39 ·
x
·
x
·
y
·
y
·
y
C.
3 · 13 ·
x
·
y
·
y
·
y
D.
3 · 13 ·
x
2
·
y
2
·
y
Hint
11.
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
12.
Find the GCF of 16
a
3
b
2
and 12
a
2
b
.
A.
2
a
2
b
B.
2
ab
C.
4
ab
D.
4
a
2
b
Hint
13.
Which fraction is
written in simplest form?
A.
B.
Already simplified
C.
D.
Hint
14.
Find
A.
x
8
B.
1
8
C.
1
3
D.
x
3
Hint
15.
Write the expression 5
-4
using a positive exponent.
A.
5
4
B.
C.
-5
4
D.
Hint
16.
Express 0.00186 in scientific notation.
A.
1.86 × 10
-4
B.
1.86 × 10
-5
C.
1.86 × 10
-3
D.
1.86 × 10
3
Hint