Least Common Multiple (LCM)

The video tutorial explains the concept of least common multiples (LCM) and how to find them. It begins with an introduction to multiples using numbers like 3 and 4, then moves on to define LCM and provide examples with numbers such as 3, 4, and 5. The tutorial discusses methods to find LCM, including writing out multiples and using prime factorization, demonstrated with numbers 12 and 80. Finally, it shows how LCM can be applied to compare fractions with different denominators, using 1/3 and 1/4 as examples.

What is the definition of a multiple?

How do you find the least common multiple of two numbers?

What are the multiples of 5?

Explain why the product of two numbers is not always their least common multiple.

What is the least common multiple of 6 and 9?

Describe the process of finding the least common multiple using prime factorization.

How can finding the least common multiple help in comparing fractions?