用简便的方法计算下面各题2.9*6.7+2.3+2.9 6.72*102-672*0.02 2.5*32*1.255.8*5.8+0.58*42 36.75*99+36.75 1.79*99+17.9
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![用简便的方法计算下面各题2.9*6.7+2.3+2.9 6.72*102-672*0.02 2.5*32*1.255.8*5.8+0.58*42 36.75*99+36.75 1.79*99+17.9](/uploads/image/z/33639-15-9.jpg?t=%E7%94%A8%E7%AE%80%E4%BE%BF%E7%9A%84%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%97%E4%B8%8B%E9%9D%A2%E5%90%84%E9%A2%982.9%2A6.7%2B2.3%2B2.9+6.72%2A102-672%2A0.02+2.5%2A32%2A1.255.8%2A5.8%2B0.58%2A42+36.75%2A99%2B36.75+1.79%2A99%2B17.9)
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