Addition Algorithms

In class Thursday, we learned about Addition Algorithms and that there are three of them Left to Right, Partial Sums, and Right to Left (aka the traditional algorithm). I found that the Left to Right and the Partial Sums algorithm way wasn't to hard if you got to understand it and the way it works. So heres a link that shows the Partial Sums and Left to Right algorithm http://www.youtube.com/watch?v=mvdVjwbim6w.