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125x56的简便算法

125×56 =125×(8×7)(把56拆分成8×7) =125×8×7(按顺序计算125乘以8得

原式 =125x(8x7) =(125x8)x7 =1000x7 =7000

56x125=7x8x125=7x1000=7000 如有帮助请采纳,手机请点击右上角的满意,谢谢

56×125 =7×(8×125) =7×1000 =7000

125x56 =125×8×7 =1000×7 =7000

56×125 =(56÷8)×(125×8) =7×1000 =7000

56x5x125用简便方法计算怎么做? 用乘法交换律和乘法结合律进行简算 56x5x125 =(7

125x8x7-25x56 =125x56-25x56 =56x(125-25) =56x10

原式=125×(56+23+1) =125×100 =12500 如有疑问,请追问;如已解

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