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How do you show your work for the greatest common factor of 18 and 30?
Wiki User
∙ 11y ago
You can not find the greatest common factor for just one number. Ill will choose another number to compare 33 with. Lets choose 88.
First take 33 and find all the numbers it divides into by a whole number
33/3 = 11 So 3 and 11
33/33 = 1 So 1 and 33
the only factors are 3 and 11 ... 3x11=33
and 1 and 33 ... 1x33=33
it is written like this...
33 - 1,3,11,33
Now take 88 and find all the numbers that it divides into by a whole number
88/2 = 44 So 2 and 44
88/4 = 22 So 4 and 22
88/8 = 11 So 8 and 11
88/88 = 1 So 1 and 88
So the factors of 88 are ... 2x44=88 ; 4x22=88 ; 8x11=88 ; 1x88=88
it is written like this
88 - 1, 2, 4, 8, 11, 22, 44, 88
Now take all of the factors of 33 and 88 and find the number that is in common and that is the greatest. Did you find it...
the answer is 11
Wiki User
∙ 13y ago
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