What is the lcm of 8 and 10 show workings bit by bit

To find the least common multiple (LCM) of 8 and 10, we need to list the multiples of each number until we find a common multiple:

Multiples of 8: 8, 16, 24, 32, 40, 48, 56, 64, ...

Multiples of 10: 10, 20, 30, 40, 50, 60, 70, ...

As we can see, the first common multiple is 40. Therefore, the LCM of 8 and 10 is 40.