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Khan Academy
How to Add Fractions that have Different Denominators, Fractions, Pre-Algebra
Your young mathematicians can solve this problem along with Sal. They will add 4/9 and 11/12 by finding a number that evenly divides both 9 and 12. Sal fully explains the process of finding a common denominator in an evident and...
CK-12 Foundation
Ck 12: Elem Math: Overview of Metric Capacity Operations
[Free Registration/Login may be required to access all resource tools.] Video explaining the steps to follow when solving multi-step word problems involving metric units of capacity. [0:31]