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Title: Japanese multiplication trick Written by: bio_man on Jan 24, 2014 No matter how many times I watch this I am fascinated. https://www.youtube.com/watch?v=izkLIkcVaEA Comments: I'd then rather use a calculator heh ;) Written by: padre on Jan 26, 2014 This is the best and easiest math trick I have ever seen. Thank you so much for posting this. Written by: rcjs_hill on Jan 25, 2014 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 :sweating: Written by: Alexx on Jan 24, 2014 It is limiting in that sense. It works nicely on numbers between 11 and 19, but that's about it. Written by: padre on Jan 24, 2014 (padre remember to use small digits, or you will have trouble solving multiplications like 87*98 or similar things!) Written by: Alexx on Jan 24, 2014 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. :nerd: Written by: Alexx on Jan 24, 2014 OK. That totally made my day. Thanks for posting. My kids are going to LOVE this tomorrow morning doing their math minds-on task. Written by: padre on Jan 24, 2014 |