求 15.27*7.66-9.27*7.66+15.27*2.34-9.27*2.34简算法
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![求 15.27*7.66-9.27*7.66+15.27*2.34-9.27*2.34简算法](/uploads/image/z/133291-19-1.jpg?t=%E6%B1%82+15.27%2A7.66-9.27%2A7.66%2B15.27%2A2.34-9.27%2A2.34%E7%AE%80%E7%AE%97%E6%B3%95)
求 15.27*7.66-9.27*7.66+15.27*2.34-9.27*2.34简算法
求 15.27*7.66-9.27*7.66+15.27*2.34-9.27*2.34简算法
求 15.27*7.66-9.27*7.66+15.27*2.34-9.27*2.34简算法
15.27*7.66-9.27*7.66+15.27*2.34-9.27*2.34
= (15.27-9.27)*7.66+ 15.27-9.27)*2.34
= 6*7.66 + 6*2.34
= 6*(7.66+2.34)
=6*10
=60