LCM( 10, 8 ) = 40
Write down multiples of each number until you find the first common multiple:
The multipliers of 10 are: 10, 20, 30, 40, 50, . . .
The multipliers of 8 are: 8, 16, 24, 32, 40, 48, . . .
We can see that:
LCM( 10, 8 ) = 40
This solution can be visualized using a Venn diagram.
The LCM is equal to the product of all the numbers on the diagram.