The greatest common factor of 28 and 48 is 4. The greatest common factor of two numbers is the highest number that can be multiplied to get both numbers.
Factors of 28 - 1, 2, 4, 7, 14, 28
Factors of 48 - 1, 2, 3, 4, 6, 8, 12, 24, 48
To check this, we can divide both numbers by 4 and see if our answers have any common factors. If they do, we need to check and see if there was a bigger factor we could have used.
28/4 = 7
48/4 = 12
Because 7 and 12 have no common factors other than 1, we were correct. The greatest common factor of 28 and 48 is 4.
Hope this helps!
