小明在(a +2/3)×12计算时误当成a +2/3×12,少算了(12-1)a=11a,计算结果与原来相差11a。
小明在(a +2/3)×12计算时误当成a +2/3×12计算结果与原来相差多少?12一12x2/3=12一8=4