不用九九乘法表算乘法
2:30
Added: 5 years ago
From: tcwtpsh
Views: 18,813
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  • 963+6420+32100更快

    

    Na4Ge4 2 months ago

  • 有趣。和进位算没本质区别

    演示也适合 1,2,3 之类的小数字，还比较高效。

    simonguoxm 5 months ago

  • 喔喔喔！！

    好厲害

    習慣了的話這種算法應該可以蠻快的ＸＤ

    其實原理跟直式一模一樣

    用數的數出個位數再加起來

    就會算出這樣的答案了

    用直式１２３　Ｘ　３２１

    －－－－－－－　３　３Ｘ１　３　１００Ｘ３００　８　３Ｘ２＋２Ｘ１＝８　８　１００Ｘ２０＋２０Ｘ３００＝８０００　１４　１００Ｘ１＋２０Ｘ２０＋３００Ｘ３＝１４００

    －－－－－－－－　３９４８３

    就是這樣

    o0l1e3q9 6 months ago

  • 每種方法都有他的好處與方便性

    應該稱贊想出新方法的人

    孩子不要只會用罵的，怎不說拿計算機比較快

    推一個~

    x77512 1 year ago

  • 99999*99999的 話我就不信有人會用數的

    只會百痴才會數25次81點

    pokedigi0 1 year ago

  • Woow

    MrHideyuki624 1 year ago

  • 好神奇 = =

    eric77410al6 2 years ago

  • 是很不错.....可是有谁考试是这样子做的吗？ 时间太多哦？

    ZhengManiac 2 years ago

  • @ZhengManiac 可以避免加錯 而且 好幾位的時候 用這比較方便吧

    pilichanel 1 year ago

  • @pilichanel 嘻嘻~~ 很安全不过....花的时间比较多 >.<

    ZhengManiac 1 year ago

  • 廢人算法!

    leekaho2001h 2 years ago

  • wakao.. really can do like that???

    pineapplePIErate 3 years ago

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