What is the greatest common factor of 900?

Answer 1

Common factor usually means that you are comparing it to another number.

Here is an easy way to break it down for one number.

900

1 x 900 = 900

1 x 9 x 100 = 900

1 x 3 x 3 x 2 x 50 = 900 (notice that 3 x 3 = 9 and 2 x 50 = 100)

1 x 3 x 3 x 2 x 2 x 25 = 900 (now notice that 2 x 25 = 50 now all numbers are prime numbers)

The last line is all of the factors needed to make 900.