2.7×0.043+0.27×8.72-0.027×1.5简便计算？
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2.7×0.043+0.27×8.72-0.027×1.5简便计算
=2.7×0.043+2.7×0.872-2.7×0.015
=2.7×(0.043+0.872-0.015)
=2.7×0.9
=2.7×(1-0.1)
=2.7×1-2.7×0.1
=2.43
=2.7×0.043+2.7×0.872-2.7×0.015
=2.7×(0.043+0.872-0.015)
=2.7×0.9
=2.7×(1-0.1)
=2.7×1-2.7×0.1
=2.43
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