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用简便方法计算40x125x8x25

40x125x8x25 =(40×25)×(125×8) =1000×1000 =1000000

原式 =(125x8)x(25x4) =1000x100 =100000 供参考。

用简便的方法计算 629x2x125x4x8x25x5 629x2x125x4x8x25x5 =629* (125*8)*(25*4)*(5*2) =629*1000*100*10 =629000000

原式 =(25x4)x(125x8) =100x1000 =100000

完全正确 这是乘法结合律 63x125x8=63X(125×8)=63x1000=63000

=81×(4×25)×(125x8) =81×100×1000 =8100000

125X4X8x25简便计算 =(125x8)x(4x25) =1000x100 =100000

=(125x8)x(25x4) =1000x100 =100000

125x8x4x125简便计算 125x8x4x125 =(125×8)×(125×4) =1000×500 =500000.

24x125x8用简便方法计算 =125x8x24 =1000x24 =24000

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