Using the lists to find the LCM can be slow and tedious. A faster way is to use repetitive division to find the least common multiple.

Divide the numbers by prime numbers. If a number cannot be divided it is copied down to the next step of division.

For example, to find the LCM of 3, 6 and 9, we divide them by any factor of the numbers in the following manner:

The following video shows an example of finding the Least Common Multiple using the first method and introduces a third method that uses the Greatest Common Factor (GCF)

The following video shows how to obtain the least common multiple using the repetitive division method.

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