Answers

2015-09-01T17:33:12+08:00
Well, you must do a research for that. But I'm giving you important details about GCF.

What is Greatest Common Factor? 
Greatest Common Factor or GCF is the greatest factor of two or more numbers that is the same.

How to find the Greatest Common Factor of two or more numbers?
First, list all the factors.
For example, we are finding the GCF of 6 and 8.
Let us list all the factors.
6 = 1 x 6, 2 x 3
8 = 1 x 8, 2 x 4

Second, list the common factors that you see.
1 and 2.

Lastly, identify the largest number.
2, means 2 is the GCF of 6 and 8.

Here is another example, 
Find the GCF of 8, 16, and 20
8 = 1 x 8, 2 x 4
16 = 1 x 16, 2 x 8, 4 x 4
20 = 1 x 20, 2 x 10. 4 x 5
= 1, 2, 4
= 4 IS THE GCF OF 8,16, AND 20.






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