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!