LCM( 10, 12 ) = 60
Write down multiples of each number until you find the first common multiple:
The multipliers of 10 are: 10, 20, 30, 40, 50, 60, 70, . . .
The multipliers of 12 are: 12, 24, 36, 48, 60, 72, . . .
We can see that:
LCM( 10, 12 ) = 60
This solution can be visualized using a Venn diagram.
The LCM is equal to the product of all the numbers on the diagram.