Find the GCF of each set of numbers or monomials 12,8 24,40 20,30 42,56 9,15,24 20,28,36
Mathematics · Middle School · Tue Nov 03 2020
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In the set 12,8 24,40 20 the greatest common multiple is 4.
>12 is a multiple of 1,2,3,4, 6 and 12
>8 is a multiple of 1,2,4 and 8
>24 is a multiple of 1,2,4, 6, 12 and 24
>40 is a multiple of 1,2,4,5,8,10,20 and 40
>20 is a multiple of 1,2,4, 5,10 and 20
So the GCF is 4.
In the set 42,56 9,15,24 the greatest common multiple is 3
>42 is a multiple of 1,2,3, 6,7,21, and 42
>56 is a multiple of 1,2,4,7,8, 14,28, and 56
>9 is a multiple of 1,3 and 9
>15 is a multiple of 1,3,5 and 15
>24 is a multiple of 1,2,3,4,6, 12 and 24
So the GCF is 3,
In the set 20,28,36 the greatest common factor is 4.
>20 is a multiple of 1,2,4, 5,10 and 20
>28 is a multiple of 1,2,4, 7, 14 and 28
>36 is a multiple of 1,2,3,4,6,9,12,18 and 36
So the GCF is 4