7.5÷(1.5＋3.5) 0.45×3.2×12.5 5.4×1.8＋28.2÷0.3 10－( 0.2＋6.11+0.79 ) 8.2×1.1×(4.7-2.7)13.2÷6－3.8÷4 0.77×0.7＋0.11×5.1 7.5÷(2.5＋2.5)+57÷[(0.4＋0.5)×0.6] 13.2×9－3.7×8 0.69×1.05+36×...