2.72+0.28*1.5 简便方法计算
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2.72+0.28*1.5 简便方法计算
2.72+0.28*1.5 简便方法计算
2.72+0.28*1.5 简便方法计算
2.72+0.28*1.5
=2.72+0.28+0.28*0.5
=3+0.14
=3.14
2.72+0.28*1.5 简便方法计算
2.72+0.28*1.5 简便方法计算
2.72+0.28*1.5 简便方法计算
2.72+0.28*1.5
=2.72+0.28+0.28*0.5
=3+0.14
=3.14