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简便运算3.34×3.33+2.22×9.99
人气:308 ℃ 时间:2020-03-27 05:15:36
解答
3.34×3.33+2.22×9.99
=3.34×3.33+2.22×3×3.33
=3.34×3.33+6.66×3.33
= (3.34+6.66)×3.33
=10×3.33
=33.3
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