(0.8x12.5)x(O.25xO.4)=10x0.1=1
0.8*0.25*0.4*12.5=(0.4*12.5)*(0.25*0.4)=10*0.1=1
0.8*12.5*0.4*0.25=10*1=10
0.8x0.25 x0.4 x12.5=(0.8x0.25) x(0.4 x12.5)=0.2x0.05=0.01
0.8和12.5先乘再0.4和0.25乘
1.6x7.5x1.25=2x0.8x7.5x1.25=(2x7.5)x(0.8x1.25)=15x1=153.4x7x1.5=3.4*1.5*7=5.1*7=35.70.8x0.25x0.4x12.5=(0.8*12.5)*(0.25*0.4)=10*0.1=1
(0.8*12.5)*(0.4*0.25)=10*0.1=11.25*0.8*0.7=1*0.7=0.7
(0.8x12.5)x(0.25x0.4)
=0.8*12.5*0.25 =10*0.25 =2.5
0.8*1.25=10.25*0.4=0.1 所以最后结果是1*0.1=0.1