Find the LCM & GCF Using A Venn Diagram

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Taught by msnewburn
  • Currently 4.0/5 Stars.
6206 views | 1 rating
Part of video series
Meets NCTM Standards:
Lesson Summary:

In this lesson, the instructor introduces a unique and efficient way to find the least common multiple and greatest common factor by using a Venn diagram. The video starts by teaching how to find the Prime Factorization of 12 and 18, and then moves on to identifying the common factors of 2 and 3 between the two numbers. By multiplying those common factors, the greatest common factor is determined, and by multiplying all the factors, the least common multiple is found. The instructor highlights how this method saves time and is more elegant compared to writing out all the multiples of the given numbers.

Lesson Description:

A way to find Least Common Multiple and Greatest Common Factor using a Venn Diagram.

Questions answered by this video:
  • How do you find LCM?
  • How do you find GCF?
  • How can you use a Venn Diagram to find LCM?
  • How can you use a Venn Diagram to find GCF?
  • Is there an easy way to find least common multiples?
  • Is there an easy way to find the greatest common factor?
  • Staff Review

    • Currently 4.0/5 Stars.
    A really creative and cool way to find LCM and GCF. If you’re struggling with finding LCM or GCF, check this video out. Maybe this explanation will click with you! A lot of students seem to understand this explanation better than factor trees.