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WorksheetsFactors, Prime and Composite Numbers
Total questions: 62
Worksheet time: 2hrs 4mins
Name
Class
Date
1.
Which number is a factor of 10
a)
3
b)
4
c)
5
d)
8
2.
Which number is a factor of 18
a)
4
b)
7
c)
6
d)
12
3.
Which number is a factor of 21
a)
8
b)
9
c)
6
d)
3
4.
Which number is a factor of 24
a)
9
b)
7
c)
11
d)
12
5.
Which number is a factor of 16
a)
7
b)
6
c)
9
d)
4
6.
Which set of numbers show all the factors for 15?
a)
7, 8
b)
1, 15
c)
1, 3, 5, 15
d)
3, 5, 15
7.
Which choice lists all the factors for the number 24?
a)
2, 3, 4, 6, 8, 12, 24
b)
2, 3, 4, 6, 8, 12, 24, 36
c)
1, 2, 3, 4, 6, 8, 12, 24
d)
1, 2, 4, 5, 6, 8, 12 ,24
8.
The only factors of 9 are 1 and 9 making the number 9 prime.
a)
True
b)
False
9.
Which number is NOT prime?
a)
3
b)
7
c)
17
d)
21
10.
Which number is prime?
a)
9
b)
5
c)
15
d)
1
11.
Which number is a composite number?
a)
10
b)
5
c)
7
12.
Which number is a factor of 8?
a)
3
b)
5
c)
2
13.
What are all of the factors of 40?
a)
1,2,4,5,8,12,14,40
b)
1,2,3,4,5,8,10
c)
1,2,4,5,8,10,20,40
d)
1,2,4,5,6,7,8,9,10
14.
Which are the factors of both 6 and 15?
a)
9
b)
5
c)
6
d)
3
15.
Which answer choice lists all the factors for 27?
a)
3, 9
b)
1, 3, 9, 27
c)
1, 3, 6, 9, 12, 27
d)
1, 3, 6, 9, 18, 27
16.
Which choice lists all the factors for the number 24?
a)
2, 3, 4, 6, 8, 12, 24
b)
2, 3, 4, 6, 8, 12, 24, 36
c)
1, 2, 3, 4, 6, 8, 12, 24
d)
1, 2, 4, 5, 6, 8, 12 ,24
17.
Is 27 a prime number?
a)
Yes, because it has more than one factor pair.
b)
Yes, because it has only one factor pair
c)
No, because it has more than one factor pair.
d)
No, because it has only one factor pair.
18.
Why is 1 not a prime number?
a)
because it doesn't have any factors
b)
because it is in every times tables
c)
It is a prime number
d)
because it only has 1 factor
19.
Which number is a factor of 32
a)
9
b)
7
c)
6
d)
8
20.
Which number is a factor of 23?
a)
8
b)
4
c)
3
d)
1
21.
Which is true about ALL prime numbers.
a)
They are all even.
b)
They are all odd.
c)
They have exactly two factors.
d)
They do not have any factors.
22.
Is 35 prime or composite?
a)
prime
b)
composite
23.
10
a)
prime
b)
composite
24.
Composite numbers:
a)
Are always bigger than prime numbers
b)
Have more than 2 factors
c)
Have 2 pairs of factors
d)
Don't have factors
25.
A prime number
a)
has one factor
b)
has more than 2 factors
c)
has 100 factors
d)
has exactly 2 factors: 1 and the number
26.
All of these are prime except
a)
3
b)
9
c)
2
d)
13
27.
Which lists all the factors of 15?
a)
1, 7, 8, 15
b)
1, 15
c)
1, 3, 5, 15
d)
3, 5, 15
28.
Which lists all the factors of 20?
a)
1, 2, 4, 5, 10, 20
b)
1, 2, 5, 10, 20
c)
1, 4, 5, 20
d)
1, 2, 10, 20
29.
1,2,3,6,9 and 18 are the factors of
a)
18
b)
20
c)
9
d)
6
30.
list the factors of 10
a)
1,2,3,4,5,6,7,8,9,10
b)
5,10,15,20,25,30
c)
1,2,5,10
d)
10,20,30,40,
31.
List the factors of 100
a)
100,50,25,20,
10,5,4,2,1,
10,5,4,2,1,
b)
100,50,25,20,
4,5,4,2
4,5,4,2
32.
List the factors of the number 35
a)
35,7,5,1
b)
30,5,6,7,1
33.
The factors of a number are
(1, 2, 3, 6, 9, 18)
What is the number?
(1, 2, 3, 6, 9, 18)
What is the number?
a)
9
b)
18
c)
2
34.
What is the missing factor of 20?
(1, 2, 4, ___. 10, 20)
(1, 2, 4, ___. 10, 20)
a)
4
b)
6
c)
5
35.
What is the missing factor of 14?
(1, __, 7, 14)
(1, __, 7, 14)
a)
2
b)
3
c)
4
36.
What are the factors of 35?
a)
there are none
b)
12
c)
9
d)
1, 5, 7, 35
37.
What are the factors of 14?
a)
1,14
b)
1, 2, 7, 14
c)
2, 7
d)
1, 14
38.
What are the factors of 28?
a)
1,2,4,7,14,27
b)
1,2,4,7,14,28
c)
1,2,4,7,14,29
d)
1,2,4,7,14,26
39.
List all factors of 20.
a)
1, 2, 3, 4, 5
b)
1, 2, 4, 5, 10, 20
c)
4, 5
d)
1, 20
40.
List all factors of 8.
a)
1, 2, 4, 8
b)
1, 2, 3, 5, 10
c)
1, 2, 3
d)
1, 2, 8
41.
List all factors of 7.
a)
1, 2, 7, 14
b)
1, 7
c)
1, 2, 3, 4, 5
d)
1, 2, 6, 7
42.
List all factors of 12.
a)
1, 12
b)
1, 2, 6, 12
c)
1, 2, 3, 4, 6, 12
d)
1, 2, 3, 4, 5, 6, 7, 8, 12
43.
List all factors of 25.
a)
1, 5, 25
b)
1, 2, 3, 5, 25
c)
1, 25
d)
1, 2, 3, 4, 5
44.
Which answer choice shows all the factors of 44?
a)
2, 4, 11, 22
b)
1, 2, 4, 11, 22, 44
c)
4, 11
d)
1, 4, 11, 44
45.
Find the prime number
a)
10
b)
9
c)
7
d)
4
46.
Which number is a prime number?
a)
8
b)
10
c)
3
47.
Which number is a composite number?
a)
10
b)
5
c)
7
48.
Which lists all the factors of 40?
a)
1, 2, 4, 5, 8, 12, 14, 40
b)
1, 2, 3, 4, 5, 8, 10, 40
c)
1, 2, 4, 5, 8, 10, 20, 40
d)
1, 2, 5, 8, 20, 40
49.
Is three a composite Or prime?
a)
Prime
b)
composite
50.
True or False
2 is a COMPOSITE number.
2 is a COMPOSITE number.
a)
TRUE
b)
FALSE
51.
13 is a prime number because.....
a)
it has no factors
b)
it is a composite number
c)
it has exactly 2 factors
d)
it is a congruent number
52.
Is 52 a composite number?
a)
Yes
b)
No
53.
Which number listed below is a prime number?
a)
51
b)
37
c)
63
d)
33
54.
Which is a prime number?
a)
15
b)
17
c)
21
d)
39
55.
Which of these numbers is not prime?
a)
17
b)
25
c)
23
d)
37
56.
Which of the following is prime?
a)
51
b)
53
c)
55
d)
57
57.
Which of the following numbers is divisible by 2?
a)
55
b)
81
c)
68
d)
73
58.
Which of the following numbers is prime?
a)
55
b)
81
c)
68
d)
73
59.
Is 29 prime or composite?
a)
Prime
b)
Composite
60.
Is 33 a prime or composite number?
a)
Prime
b)
Composite
61.
which number is composite
a)
11
b)
13
c)
21
d)
23
62.
Which number listed below is a prime number?
a)
21
b)
37
c)
63
d)
33
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