Name: 
 

Prime and Composite Numbers, Homework


Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 
How many factors does a prime number have?
A
0
C
1
B
2
D
3
 

 2. 
Which of these is a prime number?
A
21
C
11
B
22
D
12
 

 3. 
Which of these is a prime number?
A
3
C
6
B
4
D
6
 

 4. 
Which of these is a prime number?
A
13
C
15
B
26
D
14
 

 5. 
Which of these is a composite number?
A
38
C
3
B
7
D
19
 

 6. 
Which of these is a composite number?
A
13
C
23
B
19
D
38
 

 7. 
Which of these is a composite number?
A
5
C
29
B
10
D
11
 

 8. 
What numbers complete this factor tree?
mc008-1.jpg
A
2, 4, and 7
C
3, 4, and 6
B
3, 4, and 7
D
2, 3, and 7
 

 9. 
What numbers complete this factor tree?
mc009-1.jpg
A
2 x 2 x 5
C
5 x 5 x 5
B
2 x 25
D
2 x 5 x 5
 

 10. 
What numbers complete this factor tree?
mc010-1.jpg
A
2 x 2 x 2
C
2 x 3 x 3
B
3 x 3 x 3
D
2 x 2 x 3
 



 
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