LCM & GCF Indian Method

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Taught by msnewburn
  • Currently 4.0/5 Stars.
4794 views | 2 ratings
Part of video series
Meets NCTM Standards:
Lesson Summary:

In this lesson, Rebecca Dover shares an innovative Indian method for finding the Least Common Multiple and Greatest Common Factor. She demonstrates how to write down the numbers and ask what common factors they have, and then divide those factors out to find the GCF. The LCM is found by multiplying the remaining factors and forming an L shape with the final digits. This method is easy to follow and can be used for three or more numbers as well. Rebecca encourages viewers to share this new method with their teachers.

Lesson Description:

Finding Least Common Multiple and Greatest Common Factor using a very innovative Indian method.

Questions answered by this video:
  • How do you find LCM?
  • How do you 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 very creative and interesting way to find greatest common factor and least common multiple. A MUST watch if you have trouble finding LCD and GCF!