(1)1.5*3分之16-4分之3/0.35 =(3/2)*(16/3)-(3/4)/(35/100) =8-(3/4)/(7/20) =8-15/7 =41/7 (3)0.6:0.2=( ):1/4 0.6:0.2=3/4:1/4 (4)0.2/[5/6/(3/20+9/20)] =0.2/(5/6 / 3/20) =1/2 / 50/9 =9/100