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579×98的简便计算方法

579×98 =579×(100-2) =579×100-579×2 =57900-1158 =56742

579一198用简便计算 =579-200+2 =379+2 =381

579-(490-79) =579-(490-80+1) =579-411 =580-1-410-1 =168

104+479-579 =104-(579-479) =104-100 =4

102+579 =100+579+2 =679+2 =681 45×99 =45×100-45×1 =4500-45 =4455 你好,本题已解答,如果满意 请点右上角“采纳答案”。

579一(379十68)的简便算法 579-379-68 =200-68 =132

102加579用简便方法脱试 102+579 =100+579+2 =679+2 =681

不是所以计算都有简便算法滴,直接除就是最简单的,其他方式只会让他变得复杂~~

78×678-78×579的简便运算 78×678-78×579 =78*(678-579) =78*99=78*(100-1) =7800-78=7722

(975*579-198)/(578*976+199) =(975*578+975-198)/(578*975+578+199) =(975*578+777)/(578*975+777) =1

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