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125x56用简便方法计算

125x56 =125*(8*7) =125*8*7 =1000*7 =7000

把56分解成7和8,用125和8相乘结合,在与7乘

125*56=125*8*7=1000*7=7000 亲,利用乘法结合律.

125*56=125*(8*7)=(125*8)*7=1000*7=7000

125x56=125*(8*7)=125*8*7=1000*7=7000

125x56=125*(8*7)=125*8*7=1000*7=7000

125x56=125*8*7=1000*7=7000

=125 * (40 + 4*4) =125*40 + 125*4*4 =5000 + 500*4 =5000+2000 =7000

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

原式=125*(56+23+1) =125*80 =125*8*10 =1000*10 =10000貌似过程有点太详细了..

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