. /../Lattice Multiplication/ 1
written by Kristos on Jun 02, 2011 23:09
What do you think about it? (Don't know what it is? http://www.learnnc.org/lp/pages/4458)

I don't really like it. It seems to be more work and less intuition than the way I was taught.
written by Malkom on Jun 03, 2011 00:23
Interesting. I've been having trouble learning math, as you know, so I'll have to take a look at this. It could be useful.
written by Kristos on Jun 03, 2011 03:42
Well, it's just arithmetic method. It won't help you with Algebra and beyond.
written by Barebones on Jun 03, 2011 08:57
It looks like regular multiplication. Only that the carries are written down explicitly, for the benefit of those with an extremely short attention span.

Edit: Also, I have the impression that, being a blind mechanical method, it obscures some of the insights of what's going on.

For example, multiply 417 by 121. It's about adding 417, 8340 and 41700, if you use the old method. With the lattice this gets obscured.
written by Kristos on Jun 03, 2011 20:35
My feelings exactly.
written by E_net4 on Jun 04, 2011 12:52
Meh. There's no need for lattices when doing calculations with computers.
As so, I still prefer Booth's Multiplication algorithm. http://en.wikipedia.org/wiki/Booth%27s_multiplication_algorithm
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