Solution: The LCM of 1 and 30 is 30
Methods
How to Find the LCM of 1 and 30 by Listing Common Multiples
The first step to this method of finding the Least Common Multiple of 1 and 30 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 30?
Let’s take a look at the first 10 multiples for each of these numbers, 1 and 30:
First 10 Multiples of 1: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
First 10 Multiples of 30: 30, 60, 90, 120, 150, 180, 210, 240, 270, 300
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 30 are 30, 60, 90. Because 30 is the smallest, it is the least common multiple.
The LCM of 1 and 30 is 30.
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 25 and 12?
What is the LCM of 7 and 33?
What is the LCM of 97 and 102?
What is the LCM of 90 and 34?
What is the LCM of 141 and 71?