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掛け算の暗算方法(図式解法-3)

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Uploaded by on Feb 19, 2007

掛け算を暗算する為の図式解法。

  • likes, 9 dislikes

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  • 普通に計算したほうが早い

    

  • excellent!

  • ヒッサンと同じじゃねえか 頭悪すぎ

  • これは書き方が変わっただけで筆算と同値じゃん。。。

    それにこれが有効だったとしても、これを頭の中でやって暗算しろ­と・・・?

  • thats the lattice method

  • bullshit! why don't you just do the normal way? instead of this big crap bullshit way!

  • I think I just soiled my pants...AHHHHHHHHHHHHHHH.... that's better!

  • This method is better how?

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