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