(2.31+1.8)×(0.15×6)的简便计算？
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计算如下：
(2.31+1.8)×(0.15×6)
=4.11×0.9
=4.11×(1-0.1)
=4.11-4.11×0.1
=4.11-0.411
=4.11-1+0.589
=3.11+0.589
=3.699
(2.31+1.8)×(0.15×6)
=4.11×0.9
=4.11×(1-0.1)
=4.11-4.11×0.1
=4.11-0.411
=4.11-1+0.589
=3.11+0.589
=3.699
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