2.7*1.3=(27)*0.13=0.27*(13)=0.027*(130)=(270)*0.013
希望对您有所帮助简便2.5*32*0.125==0.35*102 4.4*0.252.5*32*0.125=2.5*4*8*0.125=10*1=100.35*102=0.35*(100+2)=0.35*100+0.35*2=35+0.7=35.74.4*0.25=(4+0.4)*0.25=4*0.25+0.4*0.25=1+0.1=1.1