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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 10 and 20
10
2
5
20

 Q 2: Find the GCF for 3 and 5
3
15
5
1

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

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

Q 5: Find the GCF for 8 and 12
4
2
24
8

 Q 6: Find the Greatest Common Factor for the numbers: 12,18
7
9
6
8

Q 7: Find the Greatest Common Factor for the numbers: 12,28
6
4
3
5

 Q 8: Find the Greatest Common Factor for the numbers: 8,30
8
3
1
2

Question 9: This question is available to subscribers only!

 Question 10: This question is available to subscribers only!


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