能简算的要用简便方法计算①3.28×0.46＋6.72×0.46②9.73×2.8－4.73×2.8③1.35×6.2＋5.79÷0.3④27.9＋3.6×2.5÷0.48⑤0

①3.28×0.46+6.72×0.46

②9.73×2.8-4.73×2.8

③1.35×6.2+5.79÷0.3

④27.9+3.6×2.5÷0.48

⑤0.6×（5.3-1.7）÷0.9

⑥6.4÷[（4.3+2.1）÷0.8]．