LCM of 12 and 15

Number 1Number 2(Optional) Enter Number 3

Determine the Least Common Multiple (LCM) of (12,15,20)

We start by listing out each multiple for our 3 numbers
The LCM is the smallest multiple common in all the lists

List the first few multiples for 12
12,24,36,48,60,72,84,96

List the first few multiples for 15
15,30,45,60,75,90,105

List the first few multiples for 20
20,40,60,80,100,120

Our Least Common Multiple (LCM) of (12,15,20) is 60