1.
Choose a tens digit for 2?6 so that the three-digit number is divisible by 6.
A.
0
B.
2
C.
3
D.
1
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.
Since 10 = 2 × 5, a number divisible by 10 is also divisible by 2 and by 5.
C.
No odd numbers are divisible by 4.
D.
All multiples of 9 are divisible by 3 because 9 = 3 × 3.
Hint
3.
In the expression (-4)
2
, -4 is called the ______.
A.
exponent
B.
power
C.
base
D.
product
Hint
4.
Express 130,254 in expanded form.
A.
(1 × 10
5
) + (3 × 10
4
) + (2 × 10
3
) + (5 × 10
2
) + (4 × 10
1
)
B.
(1 × 10
6
) + (3 × 10
5
) + (2 × 10
3
) + (5 × 10
2
) + (4 × 10
1
)
C.
(1 × 10
5
) + (30 × 10
4
) + (2 × 10
2
) + (5 × 10
1
) + (4 × 10
0
)
D.
(1 × 10
5
) + (3 × 10
4
) + (2 × 10
2
) + (5 × 10
1
) + (4 × 10
0
)
Hint
5.
Find the greatest common factor of 168 and 288.
A.
36
B.
24
C.
48
D.
2
Hint
6.
Write
using negative exponents.
A.
-2
4
B.
2
-3
C.
-2
-4
D.
2
-4
Hint
7.
Factor 50
x
4
y
.
A.
2 · 5
2
·
x
2
·
x
2
·
y
B.
2 · 5 · 5 ·
x
·
x
·
x
·
x
·
y
C.
2 · 5 · 5 ·
x
·
x
·
x
·
y
D.
2 · 5
2
·
x
4
·
y
Hint
8.
Factor –15
x
2
.
A.
3 · 5 ·
x
·
x
B.
-1 · 3 · 5 ·
x
2
C.
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
xy
B.
3
x
2
y
2
C.
3
x
2
y
D.
3
x
y
2
Hint
10.
Which fraction is
written in simplest form?
A.
B.
C.
Already simplified
D.
Hint
11.
Simplify
A.
B.
C.
Already simplified
D.
Hint
12.
Find
x
7
·
x
4
.
A.
x
11
B.
xx
11
C.
xx
28
D.
x
28
Hint
13.
Find
A.
1
3
B.
1
8
C.
x
3
D.
x
8
Hint
14.
Evaluate
x
-4
if
x
= 3.
A.
-81
B.
81
C.
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.
0.0003456
C.
34,560
D.
0.003456
Hint