3.33x3.33简便运算怎么算？

3.33x3.33简便运算
=3.33x（3+0.3+0.03）
=3.33x3+3.33x0.3+3.33x0.03
=9.99+0.999+0.0999
=10-0.01+1-0.001+0.1-0.0001
=11+(0.1-0.01-0.001-0.0001)
=11+0.0889
=11.0889

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