用简便方法计算.8.16+5.49+2用简便方法计算.8.16+5.49+2.84+4.51= 36.9-10.47+3.1-10.53=
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![用简便方法计算.8.16+5.49+2用简便方法计算.8.16+5.49+2.84+4.51= 36.9-10.47+3.1-10.53=](/uploads/image/z/1073496-48-6.jpg?t=%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%97.8.16%2B5.49%2B2%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%97.8.16%2B5.49%2B2.84%2B4.51%3D+36.9-10.47%2B3.1-10.53%3D)
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用简便方法计算.8.16+5.49+2用简便方法计算.8.16+5.49+2.84+4.51= 36.9-10.47+3.1-10.53=
用简便方法计算.8.16+5.49+2
用简便方法计算.8.16+5.49+2.84+4.51= 36.9-10.47+3.1-10.53=
用简便方法计算.8.16+5.49+2用简便方法计算.8.16+5.49+2.84+4.51= 36.9-10.47+3.1-10.53=
8.16+5.49+2
=8.15+7.5
=15.65