Practice Page
Directions: Answer these questions pertaining to common factors. The cartoon people may, or may not, be helpful!!

1.
What is the greatest common factor (GCF) of
30 and 45?


Choose:
5
9
15
18
pic1

 

 

2.
What is the greatest common factor (GCF) of 7 and 15?

Choose:
1
3
5
7
pic2

 

 

3.
What is the greatest common factor (GCF) for 9, 21, and 63?

Choose:
3
7
9
12
pic4

 

 

4.
What is the least common multiple (LCM) for 2, 4 and 9?

Choose:
8
18
36
72
pic3

 

 

5.
Two numbers have a greatest common factor of 8, and a least common multiple of 48. If one of the numbers is 16, what is the other number?

Choose:
3
18
24
36
pic5

 

 

6.
What are the common factors of 15 and 45?

Choose:
5, 15 1, 3, 5, 15
3, 5, 15 1, 3, 5, 9, 15
pic7

 

 

7.
Use the distributive property to find the greatest common factor in the expression 6x + 18.

Choose:
2
3
6
9
pic6

 

 

8.
Factor using the distributive property to find the greatest common factor: 0.33m + 0.99

Choose:
0.33(m + 3) 0.3(0.11m - 0.33)
0.33(m + 0.99) 0.3(1.1m - 3.3)
pic8

 

 

9.
What are the factors of 121?

Choose:
1, 121 1, 3, 121
1, 3, 7, 121 1, 11, 121
pic9

 

 

10.
Which of the following expressions is (are) NOT equivalent to
-6x + 12y? (Check all that apply, and hit SUBMIT!)
 

-6(x - 2y)

-3(2x - 4y)

2(-3x + 6y)

½(-12x + 24y)

-6(x + 2y)

        

pic10

 

 

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