巧算下面这道题：65.4x0.67+6.54x3.1+0.654x2
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巧算下面这道题：
65.4x0.67+6.54x3.1+0.654x2
=6.54x6.7+6.54x3.1+6.54x0.2
=6.54x（6.7+3.1+0.2）
=6.54x10
=65.4
65.4x0.67+6.54x3.1+0.654x2
=6.54x6.7+6.54x3.1+6.54x0.2
=6.54x（6.7+3.1+0.2）
=6.54x10
=65.4
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