LCM

Least Common Multiple

 

LCM is the smallest positive number that is a multiple of two or more numbers.

 

How can I find LCM?

The easiest way is by using a chart.  If I'm trying to find the LCM of 6 and 10, I can use the chart below to help.

 

  x1 x2 x3 x4 x5 x6
6 6 12 18 24 30 36
10 10 20 30 40 50 60

 

I can see that the LCM of 6 and 10 is 30. 30 is the smallest, same, multiplication answer that 6 and 10 share.

 

Now, you try! Here are some extra problems. Can you find the LCM?

 

3, 7  ______

9, 11 ______

6, 4 ______

7, 14 ______

3, 13 ______

 

Need more help with LCM? Try this resource!