Solution: The LCM of 84 and 1 is 84
Methods
How to Find the LCM of 84 and 1 by Listing Common Multiples
The first step to this method of finding the Least Common Multiple of 84 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 84?
What are the Multiples of 1?
Let’s take a look at the first 10 multiples for each of these numbers, 84 and 1:
First 10 Multiples of 84: 84, 168, 252, 336, 420, 504, 588, 672, 756, 840
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 84 and 1 are 84, 168, 252. Because 84 is the smallest, it is the least common multiple.
The LCM of 84 and 1 is 84.
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 139 and 35?
What is the LCM of 108 and 39?
What is the LCM of 149 and 42?
What is the LCM of 140 and 89?
What is the LCM of 94 and 137?