Skip to Main Content
This is a free sample lesson. Sign up for Magoosh to get access to over 200 video lessons.

Least Common Multiple



Summary
The content provides an in-depth exploration of the Least Common Multiple (LCM), its calculation methods, significance in various mathematical contexts, and strategies for enhancing number sense and intuition in solving related problems.
  • LCM is crucial for solving problems involving fractions, sets of different sizes, and is identical to the Least Common Denominator (LCD).
  • The process of finding the LCM can be simplified by using the Greatest Common Factor (GCF) and the prime factorization of the numbers involved.
  • Understanding and applying the concept of LCM is essential for efficient problem-solving in the GRE exam, especially in math sections.
  • Developing number sense and intuition is emphasized as a key strategy for improving performance in math, beyond memorizing procedures.
  • An exercise for building number sense involves daily practice with pairs of two-digit numbers to estimate their GCF and LCM before verifying with a detailed procedure.
Chapters
00:00
Introduction to Least Common Multiple
01:55
Finding the LCM Using GCF and Prime Factorization
04:25
Practical Applications of LCM