125*25*8*4=(125*8)*(25*4)=1000*100=100000
125*8*25*4 =1000*100 =100000
125x25x4x4用简便计算=(125x4)x(25x4)=500x100=50000
125x25x4x8=(125x2)x4x(25x4)=250x4x100=1000x100=100000
=(125*4)*(25*4) =500*100 =50000
125x8x25x4 =1000x25x4 =25000x4 =100000
(125+25)x(8x4) =125*8*4+25*4*8=1000*4+100*8=4000+800=4800
64Ⅹ205=64X(200+5)=12800+320=13120125X25X8X4=125X8X25X4=1000X100=10000024X76+76X76=76X(24+76)=76X100=760057X19+57=57X(19+1)=57X20=1140
125x25x8x4x2x8=125x8x25x4x2x8=1000x100x16=1600000
125*25*8*4=(125x8)x(25x4)=1000x100=100000