Q:

What is the LCM of 115 and 50?

Accepted Solution

A:
Solution: The LCM of 115 and 50 is 1150 Methods How to find the LCM of 115 and 50 using Prime Factorization One way to find the LCM of 115 and 50 is to start by comparing the prime factorization of each number. To find the prime factorization, you can follow the instructions for each number here: What are the Factors of 115? What are the Factors of 50? Here is the prime factorization of 115: 5 1 × 2 3 1 5^1 × 23^1 5 1 × 2 3 1 And this is the prime factorization of 50: 2 1 × 5 2 2^1 × 5^2 2 1 × 5 2 When you compare the prime factorization of these two numbers, you want to look for the highest power that each prime factor is raised to. In this case, there are these prime factors to consider: 5, 23, 2 2 1 × 5 2 × 2 3 1 = 1150 2^1 × 5^2 × 23^1 = 1150 2 1 × 5 2 × 2 3 1 = 1150 Through this we see that the LCM of 115 and 50 is 1150. How to Find the LCM of 115 and 50 by Listing Common Multiples The first step to this method of finding the Least Common Multiple of 115 and 50 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 in the links below for each number. Let’s take a look at the multiples for each of these numbers, 115 and 50: What are the Multiples of 115? What are the Multiples of 50? Let’s take a look at the first 10 multiples for each of these numbers, 115 and 50: First 10 Multiples of 115: 115, 230, 345, 460, 575, 690, 805, 920, 1035, 1150 First 10 Multiples of 50: 50, 100, 150, 200, 250, 300, 350, 400, 450, 500 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 115 and 50 are 1150, 2300, 3450. Because 1150 is the smallest, it is the least common multiple. The LCM of 115 and 50 is 1150. Find the LCM of Other Number Pairs Want more practice? Try some of these other LCM problems: What is the LCM of 127 and 57? What is the LCM of 100 and 147? What is the LCM of 45 and 17? What is the LCM of 137 and 141? What is the LCM of 90 and 62?