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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


能简算的要用简便方法计算

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].

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