# HCF and LCM explained

This video from Mathsmaster.org shows very clearly the step by step method of finding the LCM and HCF of two numbers.

Time: 2:52

#### Perfect Magic Square

Arrange the sixteen numbers on the four by four grid so that groups of four numbers in a pattern add up to the same total. So far this activity has been accessed 149 times and 3 people have earned a Transum Trophy for completing it.

Teacher: Click the play button in the centre of the video screen above. In the bottom right corner of the video (when you cursor moves over the playing video) is a broken square button which opens full-screen mode.

## HCF and LCM explained

#### This video from Mathsmaster.org shows very clearly the step by step method of finding the LCM and HCF of two numbers.

There are plenty of other mathematical videos in our collection which are perfect for that short interlude in your lesson when you need a break. There are funny videos, instructional videos and videos that will inspire and motivate.

Please let Transum know if you know of a video on YouTube that would be a valuable addition to this collection.