2.35x0.5-0.15×0.35简便计算=2x0.35+0.5x0.35-0.15x0.35=0.7+(0.5-0.15)x0.35=0.7+0.35x0.35=0.7+0.1225=0.8225
计算(2.35-0.35)*0.5=2*0.5=1