1.
Which number is divisible by 2, 3, and 5?
A.
1230
B.
2052
C.
945
D.
3100
Hint
2.
Choose the false statement.
A.
Since 10 = 2 × 5, a number divisible by 10 is also divisible by 2 and by 5.
B.
No odd numbers are divisible by 4.
C.
All multiples of 9 are divisible by 3 because 9 = 3 × 3.
D.
If a number is divisible by 2 then it is divisible by 4 because 4 = 2 × 2.
Hint
3.
Evaluate the expression 4
n
+
m
2
if
m
= 6 and
n
= 8.
A.
88
B.
44
C.
40
D.
68
Hint
4.
Find
y
for
y
=
x
2
- 15 if
x
= 6.
A.
49
B.
-3
C.
21
D.
51
Hint
5.
Find the greatest common factor of 168 and 288.
A.
2
B.
48
C.
24
D.
36
Hint
6.
What is the greatest common factor of 18
mn
2
, 54
m
4
, and 80
n
3
?
A.
9
mn
B.
2
mn
2
C.
18
m
2
n
3
D.
2
Hint
7.
Simplify
A.
B.
C.
2
ab
2
D.
Hint
8.
Express 7
-3
using positive exponents.
A.
(-7)
3
B.
C.
D.
Hint
9.
Write
in standard form.
A.
3.57682
B.
0.357682
C.
3,576,820
D.
357,682
Hint
10.
The diameter of a volcanic particle averaged 0.000022 meter. What is this measure written in scientific notation?
A.
2.2 × 10
-5
B.
2.2 × 10
5
C.
2.2 × 10
D.
0.22 × 10
-4
Hint
11.
Write the prime factorization of 756.
A.
2
3
· 3
3
· 7
B.
2 · 3
5
· 7
C.
2
2
· 3 · 63
D.
2
2
· 3
3
· 7
Hint
12.
Factor 50
x
4
y
.
A.
2 · 5 · 5 ·
x
·
x
·
x
·
y
B.
2 · 5
2
·
x
4
·
y
C.
2 · 5
2
·
x
2
·
x
2
·
y
D.
2 · 5 · 5 ·
x
·
x
·
x
·
x
·
y
Hint
13.
Four inches is what part of 1 yard? Write you answer as a fraction in simplest form.
A.
B.
C.
D.
Hint
14.
Which fraction is
written in simplest form?
A.
B.
C.
D.
Already simplified
Hint
15.
Find
A.
10
12
B.
1
12
C.
10
2
D.
1
2
Hint
16.
Write the expression
m
-7
using a positive exponent.
A.
-
m
7
B.
C.
m
7
D.
Hint