WorksheetsPrime and Composite Numbers
Total questions: 11
Worksheet time: 11mins
Name
Class
Date
1.
Prime numbers have
a)
more than 2 factors
b)
at least 2 factors
c)
only 2 factors
d)
less than 2 factors
2.
Select all prime numbers
a)
1
b)
2
c)
10
d)
33
e)
49
3.
Composite numbers have
a)
more than 3 factors
b)
more than 2 factors
c)
only 2 factors
d)
only 3 factors
4.
Find all composite numbers
a)
2
b)
6
c)
55
d)
21
e)
12
5.
0 is a composite number.
a)
True
b)
False
6.
0 is a prime number.
a)
True
b)
False
7.
2 is the smallest prime number.
a)
True
b)
False
8.
Find the common factors for 10 and 30.
a)
1
b)
2
c)
3
d)
5
e)
10
9.
Find common multiples for 6 and 10.
a)
2
b)
3
c)
10
d)
30
e)
60
10.
What is the highest common factor (HCF) for 20 and 40?
a)
10
b)
5
c)
40
d)
20
11.
What is the lowest common multiple (LCM) for 15 and 45?
a)
3
b)
5
c)
15
d)
45
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