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19 May, 16:20

GCF and LCM what is it and what do i have to do

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  1. 19 May, 16:24
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    GCF stands for Greates Common Factor, it is basically the biggest number that can be divided into a set of numbers. For example the GCF of 8 and 16 is 8 because 8/8 is 1 and 16/8 is 2.

    LCM stands for Least Common Multiple, it is basically the smallest number that is a multiple of a set of numbers. For example the LCM of 8 and 16 is 16 because 8 times 2 is 16 and 16 times 1 is 16.
  2. 19 May, 16:49
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    GCF is the Greatest Common Factor. It would be the largest number that can divide evenly into all the numbers you need to find the GCF in.

    exapmple GCF for 12 and 16

    12: 1, 2, 3, 4, 6, 12

    16: 1, 2, 4, 8, 16

    the largest common number is 4, so 4 is the GCF of 12 & 16

    LCM = Least Common Multiple is the smallest number (other than zero) that is a multiple of both

    LCM of 3 and 5

    3: 3, 6, 9, 12, 15, 18

    5: 5, 10, 15, 20

    the first common number is 15, so this is the LCM of 3 & 5
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