Finding the least common multiple using prime factorization
In this video, we show how to factor a number using a factor tree. We then show how to use the prime factorization of two numbers to get their least common multiple and their greatest common divisor using a Venn diagram of the prime factors.
0:00 Introduction
0:23 Prime factors from factor trees
2:13 LCM and GCF with Venn diagrams
4:52 Finding LCM and GCF from scratch