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一分鐘速算

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Uploaded by on Jun 8, 2010

"手指法"、"转换法"、"万能法"有3種算法

Category:

Education

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Standard YouTube License

  • likes, 6 dislikes

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All Comments (9)

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  • 好爛.

  • 我心算比他快多了

    

  • 是因為都乘以9嗎?

    如果不乘以9呢?

  • 我家計算機也很快ㄟ

    

  • 只有剛好是個位數比十位數少一才有效吧

    

  • @guan0724 603 haaha

  • 那57x9呢?

    

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