Posted by Ann on Monday, July 14, 2008 at 8:17pm.
Find the least common multiple of 9, 10, and 30.

math  Ms. Sue, Monday, July 14, 2008 at 8:24pm
The multiples are:
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108 . . .
10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110 . . .
30, 60, 90, 120, 150 . . .
What is the smallest multiple of those three numbers? 
math  karen, Wednesday, July 23, 2008 at 10:10pm
i got 90