8.88*3.33+6.67*3.33+6.67*5.55的简便方法

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8.88*3.33+6.67*3.33+6.67*5.55的简便方法

=8.88*3.33+6.67*(3.33+5.55)
=8.88*3.33+6.67*8.88
=8.88*(3.33+6.67)
=8.88*1
=8.88