1.
Based on the factor trees, what is the greatest common factor of 8 and 20?
A.
2
B.
8
C.
4
D.
20
Hint
2.
What is the greatest common factor of 25
a
2
b
and 5
ab
2
?
A.
5
B.
5
ab
C.
5
a
2
b
2
D.
5
ab
2
Hint
3.
George wants to resurface the table below with ceramic tiles. What is the largest square tile that he can use without having to cut any tiles?
A.
12 inches on each side
B.
4 inches on each side
C.
8 inches on each side
D.
6 inches on each side
Hint
4.
What is the greatest common factor of 39 and 18?
A.
3
B.
6
C.
13
D.
9
Hint
5.
What is the greatest common factor of 20
x
2
and 32
x
3
?
A.
4
x
B.
8
x
C.
8
x
3
D.
4
x
2
Hint