How do you get the least common multiple of 24 and 20?

Answer 1

well, you can tell when somethings divisible by 20 because the last 2 numbers are always an even one then a zero, so I would just count up by 24's till you get to that number. It's 120

or

Factor them.

2 x 2 x 5 = 20

2 x 2 x 2 x 3 = 24

Combine the factors, eliminating duplicates.

2 x 2 x 2 x 3 x 5 = 120, the LCM