Factors and GCF

First i am going to tell you how to find factors. Lets say you have the number 30. Now you have to list all the numbers that go into 30. There are 2 different ways to list the factors, but this is how I like to list them. First, I know that 1 and 30 are factors so i put down 1,30. Then, since it is a even number, i know 2 goes into it with 15 because 15x2 is 30. Now I should have down 1,30,2,15. You probably get it now so I will just put down all the factors. your final answer should be 1,30,2,15,3,10,5,6.

Now I am going to talk about the GCF. GCF stands for Greatest Common Factor. We will use 30 as a example again. First, I like to list all the factors. 1,30,2,15,3,10,5,6. We cannot use 30 because you are not supposed to use the number listed or it would be to easy. Now we take the biggest number out of the factors and in this case it would be 15. 15 would then be your answer.   

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