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MEAP Preparation - Grade 6 Mathematics
2.17 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 11 and 13
11
1
13
26

Q 2: Find the Greatest Common Factor for the numbers: 10,15
6
5
4
7

Q 3: Find the GCF for 12 and 15
60
12
5
3

Q 4: Find the GCF for 6 and 9
3
6
9
54

Q 5: Find the GCF for 10 and 20
2
20
10
5

Q 6: Find the Greatest Common Factor for the numbers: 14,21
7
4
3
6

Q 7: Find the Greatest Common Factor for the numbers: 12,15
5
2
4
3

Q 8: Find the GCF for 3 and 5
3
1
15
5

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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