Japanese multiplication trick

[Videos]

Japanese multiplication trick 7 1
Posted by bio_man   January 24, 2014   3477 views
No matter how many times I watch this I am fascinated.
math learning skills tricks
Posted in Videos
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1 OK. That totally made my day. Thanks for posting. My kids are going to LOVE this tomorrow morning doing their math minds-on task. Posted on Jan 24, 2014 by padre 2 This seems pretty cool indeed, but in fact the method is inconvenient. You see, the speaker frequently uses small digits (1 and 2) and skillfully evades high numbers. For high digits this method is very impractical. In any case, the "Long Multiplication" is much more convenient. So yes, the presentation is pretty cool, but that's all about it. Posted on Jan 24, 2014 by Alexx 3 (padre remember to use small digits, or you will have trouble solving multiplications like 87*98 or similar things!) Posted on Jan 24, 2014 by Alexx 4 It is limiting in that sense. It works nicely on numbers between 11 and 19, but that's about it. Posted on Jan 24, 2014 by padre 5 This trick could be used to larger number as well, as long as: 1)the digits are small 2) your drawing skills are sufficient! Avoid this 9 at all cost! Imagine doing 19*19 Posted on Jan 24, 2014 by Alexx 6 This is the best and easiest math trick I have ever seen.  Thank you so much for posting this. Posted on Jan 25, 2014 by rcjs_hill 7 I'd then rather use a calculator heh Posted on Jan 26, 2014 by padre