LCM is an acronym for "Least Common Multiple." LCM is the smallest number that is a multiple of two or more numbers.
List the multiples of each number. In our example, the multiples of 5, 6, and 15 are listed. Now, look at the list of multiples and find the smallest number that all of the numbers have in common. Once you find the smallest number, you have finally found the LCM! In this example, the smallest number that all of the numbers share is 30, therefore, making the LCM = 30.
Practice LCM by playing this game : http://www.fun4thebrain.com/beyondfacts/lcmsnowball.html
Want to master Microsoft Excel and take your work-from-home job prospects to the next level? Jump-start your career with our Premium A-to-Z Microsoft Excel Training Bundle from the new Gadget Hacks Shop and get lifetime access to more than 40 hours of Basic to Advanced instruction on functions, formula, tools, and more.