Solution: The LCM of 1 and 3 is 3
Methods
How to Find the LCM of 1 and 3 by Listing Common Multiples
The first step to this method of finding the Least Common Multiple of 1 and 3 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 1?
What are the Multiples of 3?
Let’s take a look at the first 10 multiples for each of these numbers, 1 and 3:
First 10 Multiples of 1: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
First 10 Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30
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 1 and 3 are 3, 6, 9. Because 3 is the smallest, it is the least common multiple.
The LCM of 1 and 3 is 3.
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 134 and 81?
What is the LCM of 132 and 25?
What is the LCM of 37 and 67?
What is the LCM of 46 and 35?
What is the LCM of 24 and 50?