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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 5 - Mathematics
5.7 Greatest Common Factors - GCF

Method:
  • List out the factors of numbers.
  • Find out the common factors.
  • The greatest of them is the GCF.
Example: Find GCF of 14 and 12
Factors of 14 are 1, 2, 7, 14
Factors of 12 are 1, 2, 3, 4, 6, 12
Common factors are 1,2
GCF is 2
Answer: 2


Directions: Find the GCF of the following. Also write at least 5 examples of your own.
Q 1: Find the GCF for 12 and 15
5
60
12
3

Q 2: Find the Greatest Common Factor for the numbers: 12,15
3
2
5
4

Q 3: Find the GCF for 8 and 12
24
4
8
2

Q 4: Find the GCF for 11 and 13
1
26
13
11

Q 5: Find the Greatest Common Factor for the numbers: 12,28
3
6
5
4

Q 6: Find the GCF for 15 and 20
1
3
60
5

Q 7: Find the GCF for 6 and 9
54
3
9
6

Q 8: Find the GCF for 16 and 20
2
5
4
8

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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