Solution: The LCM of 120 and 1 is 120
Methods
How to Find the LCM of 120 and 1 by Listing Common Multiples
The first step to this method of finding the Least Common Multiple of 120 and 1 is to begin to list a few multiples for each number. If you need a refresher on how to find the multiples of these numbers, you can see the walkthroughs for those here:
What are the Multiples of 120?
What are the Multiples of 1?
Let’s take a look at the first 10 multiples for each of these numbers, 120 and 1:
First 10 Multiples of 120: 120, 240, 360, 480, 600, 720, 840, 960, 1080, 1200
First 10 Multiples of 1: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
You can continue to list out the multiples of these numbers as long as needed to find a match. Once you do find a match, or several matches, the smallest of these matches would be the Least Common Multiple. For instance, the first matching multiple(s) of 120 and 1 are 120, 240, 360. Because 120 is the smallest, it is the least common multiple.
The LCM of 120 and 1 is 120.
Continue Practicing by Finding the LCM of Other Numbers
Take a look at some of our other walkthroughs, and you’ll be sure to be an expert at finding the LCM of any numbers in no time!
What is the LCM of 13 and 57?
What is the LCM of 139 and 146?
What is the LCM of 31 and 118?
What is the LCM of 12 and 46?
What is the LCM of 40 and 38?