3 ms·
Came in here to post that exact video, it made perfect sense to me. I learned with the classic algorithms, and have kindof self-realized some of the newer meth
by seltzered 16y ago
Came in here to post that exact video, it made perfect sense to me.
I learned with the classic algorithms, and have kindof self-realized some of the newer methods after college when needing to solve some basic math in my head to "eyeball" whether something will work. It's convenient, but not exact.
You can't use it in areas where exact answers are required to make sure you're right, and the classical equations serve as "debug/trace information" to see where you went wrong.
- Someone 16y agoI disagree with that video. The alternative methods for multiplication and long division are fine. For long division, the classical one doesn't even work on harder problems. Listen carefulley, and you'll hear several "because we know two times six equals twelve"; for most, that will not work when dividing by say 4367. Also, I doubt that price of books is part of this problem. There is one argument that I think is valid: kids get insufficient exercise to master these. Even that need not be a bad thing. I cannot recite the bible, but the time I gained by not even attempting to master that (I think) gave me time to read a zillion other books.