[b]LCM[/b] is [b]L[/b]owest[b] C[/b]ommon[b] M[/b]ultiple of two or three numbers.[br][br]1. Click on "New problem" and try to find the lcm.[br][br]2. Write the result in your book:[br]e.g. LCM (12,5) = 60[br][br]3. Now check if your answer is right by clicking on "Check answer"[br][br]4. Click on "New problem" again [br]and continue the same way until you got at least 10 right answers.