(1)5.6×1.2+2.8 =6.72+2.8 =9.52 答:这个数是9.52. (2)14.7÷(2+5) =14.7÷7 =2.1 答:这个数是2.1. (3)(2×8+6)÷5 =(16+6)÷5 =22÷5 =4.4 答:这个数是4.4.