How do you write the least common multiple of 10, 20, and 2? Prealgebra Factors and Multiples Least Common Multiple 1 Answer sjc Feb 9, 2017 #LCM(2,10,20)=20# Explanation: #"multiples of "2:{2,4,6,8,10,12,14,16,18,20,22,24,26,...}# #"multiples of "10:{10,20,30,40,...}# #"multiples of "20:{20,40,60,...}# #"common multiples: "{20,40,60,...}# #LCM(2,10,20)=20# Answer link Related questions What is the least common multiple of 2, 3, and 7? What is the least common multiple of 9, 36 and 45? What is the least common multiple of 5 and 60? What is the least common multiple of 9, 18 , and 21? What is the least common multiple of 8, 10, 12? What is the least common multiple of 15 and 50? What is the least common multiple of 6 and 9? How do you find the least common multiple of a set of numbers? How do you use least common multiple? How can you find the least common multiple using prime factorization? See all questions in Least Common Multiple Impact of this question 7447 views around the world You can reuse this answer Creative Commons License