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125x8x125x4的简便运算

简便计算125x(8X4)=125x8x4=1000x4=4000

原式=(125x8)x(4x5)=1000x20=20000 供参考.

125x0.25x8x4=(125x8)x(0.25x4)=1000x1=1000

用简便方法计算125x12x8x4125x12x8x4=125*8*12*4=1000*48=48000

125*8*25*4 =1000*100 =100000

125*25*8*4 =(125*8)*(25*4) =1000*100 =100000

(125x8)x(4x15)=1000x60=60000

125x4658的简便运算=125x(4000+600+50+8)=125x4000+125x600+125x50+125x8=500000+75000+6250+1000=575000+7250=582250

125x17x8x4=125*8*17*4=1000*68=68000

125x8x25x4 =1000x25x4 =25000x4 =100000

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