急用急用!一简便计算:29.73-(8.4+8.73)14.7+8.17+5.3+1.8386.86-2.56-7.445.75+6.89-6.89+14.2514.3-(4.15-2.7)16.36-5.1+3.65-4.94.2*99+4.20.25*32*12.517.8\(1.78*4)8.27-1.35+1.73-6.6515.37*5.6+15.37*4.443.7*0.1+4.37*9二填空：3.5米=()厘米

Answer 1

一 简便计算:29.73-(8.4+8.73) =29.73-8.73-8.4=21-8.4=12.614.7+8.17+5.3+1.83 =14.7+(8.17+1.83)=24.786.86-2.56-7.44=86.88-(2.56+7.44)=76.885.75+6.89-6.89+14.25 =5.75+14.25+(6.89-6.89)=2014.3-(4.15-2.7) =...