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WorksheetsGCF and LCM
Total questions: 12
Worksheet time: 16mins
Name
Class
Date
1.
Which of these is NOT a factor of 20?
a)
2
b)
4
c)
6
d)
20
2.
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
3.
What is the least common multiple (LCM) of 4 and 10?
a)
4
b)
40
c)
15
d)
20
4.
What is the LCM of 2, 4, 6?
a)
6
b)
12
c)
4
d)
2
5.
Sara had 16 red flowers and 24 yellow flowers. She wants to make bouquets with the same number of each color flower in each bouquet. What is the greatest number of bouquets that she can make?
a)
4
b)
2
c)
48
d)
8
6.
Which of the following is a multiple of 7?
a)
14
b)
17
c)
22
7.
Jenny goes to dance class every 6 days, karate class every 12 days, and to the library every 18 days. On December 1st she went to both classes and the library. On what date will she do both classes and go to the library?
a)
Greatest Common Factor
b)
Least Common Multiple
8.
Find the LCM of 18 and 24
a)
6
b)
72
c)
24
d)
5
9.
Which is a NOT a factor of 9?
a)
0
b)
1
c)
3
d)
9
10.
Which of the following is a multiple of 8?
a)
8
b)
2
c)
4
d)
100
11.
What is the GCF of 4 and 12?
a)
3
b)
1
c)
6
d)
4
12.
What is the least common multiple of 4 and 7?
a)
4
b)
7
c)
14
d)
28
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