McGraw Hill
Glencoe: Self Check Quizzes 1 Least Common Multiples
Use Glencoe's randomly generated self-checking quiz to test your knowledge of how to find the least common multiple. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the...
Other
Help With Fractions: Least Common Denominator
The rules for finding the least common denominator are clearly explained at this website. Two different methods are given. This is an excellent place to get step by step explanations for working with fractions.