Question

What is the greatest common factor of 40 and 24?

Answer 1

what is the biggest number that divides them both?

Answer 2

what are all the numbers that divide 24?

Answer 3

12

Answer 4

does 12 divide 40?

Answer 5

here I will help you to show you the general way to solve these problems.

pick the smallest number 24

list its divisors

1,2,3,4,6,8,12,24 (bonus: The fact that it has this many divisors is part of the reason we use 24 for the amount of hours in a day.)

OK start at the top

Now 24 does not divide 40 because 24*2 = 48

Does 12 divide 40?

12*2 = 24
12*3 = 36
12*4 = 48

It does not, so we move to the next.

Does 8 divide 40?

Answer 6

Psst the answer is 4.