9.99x2.22+3.33x3.34的简算怎么做

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9.99x2.22+3.33x3.34的简算怎么做
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9.99x2.22+3.33x3.34的简算怎么做
9.99x2.22+3.33x3.34的简算怎么做

9.99x2.22+3.33x3.34的简算怎么做
9.99x2.22+3.33x3.34
=3.33x(3x2.22+1x3.34)
=3.33x(6.66+3.34)
=3.33x10
=33.3

9.99*2.22+3.33*3.34
=9.99/3*2.22*3+3.33*3.34
=3.33*6.66+3.33*3.34
=3.33*(6.66+3.34)
=3.33*10
=33.3