Question

Find the greatest common factor of 8, 18 and 70

Answer 1

In order to find the GCF of no.'s we need to first look at the smallest no (which is 8, in this case)

Next, list down all the factors of 8.

1*8

2*4

4*2

8*1

Now, once you have listed all the factors for 8, find which factor of 8 goes with 18 and 70.

2 is the answer; because 2 goes into 8, 18 and 70.

Answer 2

2 is the gcf.