125*25*8*4=(125*8)*(25*4)=1000*100=100000
125x8x25x4 =1000x25x4 =25000x4 =100000
125*8*25*4 =1000*100 =100000
(125x25)x8=125x25x8=125x8x25=1000x25=25000
简便计算125*25*8*4=(125x8)x(25x4)=1000x100=100000
121x2x125x25x5x8x4=121*(2*5)*(125*8)*(25*4)=121*10*1000*100=121000000
125X4X25X8=(125*8)*(4*25)=1000*100=100000
125x(4+8)x25=125x12x25=(125*3)x(4x25)=375*100=37500
=(125*4)*(25*4) =500*100 =50000
125乘8乘4乘25