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用简便运算125x457x125

解析:先将64拆分成4×2×8,然后再利用乘法结合律进行计算。 25×64×125 =25×4×2×8×125(64拆分成4×2×8) =(25×4×2)×(8×125)(利用括号进行结合) =200×1000 =200000 注意:在进行简便运算(四则运算 )时,应注意运算符号(乘除和加减)和大、...

[][][] 72x125 =9x8x125 =9x1000 =9000

原式 =25x5x(4x2x8)x125 =(25x4)x(5x2)x(8x125) =100x10x1000 =1000x1000 =1000000 供参考。

72x125 =9x8x125 =9x(8x125) =9x1000 9000 因为用乘法口诀把72分成9x8刚好,然后再乘8x125能口算,最后就是9x1000等于9000了。

88x125 =(11X8)X125 =11X(8X125) =11X1000 =11000 希望对你有帮助,满意请及时采纳, 你的采纳是我回答的动力!

125x45-37x125 =125x45-125×37 =125x(45-37) =125x8 =1000

=125×(80+1) =125×80+125×1 =10000+125 =10125

125x25x4x4用简便计算 =(125x4)x(25x4) =500x100 =50000

125×704 =125×(700+4) =125×700+125×4 =87500+500 =88000 你好,本题已解答,如果满意 请点右下角“采纳答案”。

满意回答 72x125 =9x8x125 =9x1000 =9000

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