用简便方法计算.0.42×160+36×1.6-68×1.6 32×0.25×12.5×0.2×5 0.92×54+0.46×92
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![用简便方法计算.0.42×160+36×1.6-68×1.6 32×0.25×12.5×0.2×5 0.92×54+0.46×92](/uploads/image/z/1258385-41-5.jpg?t=%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%97.0.42%C3%97160%2B36%C3%971.6-68%C3%971.6+32%C3%970.25%C3%9712.5%C3%970.2%C3%975+0.92%C3%9754%EF%BC%8B0.46%C3%9792)
用简便方法计算.0.42×160+36×1.6-68×1.6 32×0.25×12.5×0.2×5 0.92×54+0.46×92
用简便方法计算.0.42×160+36×1.6-68×1.6 32×0.25×12.5×0.2×5 0.92×54+0.46×92
用简便方法计算.0.42×160+36×1.6-68×1.6 32×0.25×12.5×0.2×5 0.92×54+0.46×92
0.42×160+36×1.6-68×1.6 =1.6x(42+36-68) =1.6x10 =16 32×0.25×12.5×0.2×5 =4x8x0.25x12.5x0.2x5 =(4x0.25)x(8x12.5)x(5x0.2) =1x100x1 =100 0.92×54+0.46×92 =92x0.54+96x0.46 =92x(0.54+0.46) =92x1 =92