# How do you find the Gcf of 8 and 12?

##### 1 Answer

Dec 18, 2016

#### Answer:

Start by writing each as a product of all its prime factors. The factors you see in both expressions can then by multiplied to give the answer (4).

#### Explanation:

As a product of its prime factors 8 = 2 x 2 x 2

and 12 = 2 x 2 x 3

Both expressions have 2 x 2 in them. So, this tells us the greatest common factor: 2 x 2 = 4