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用简便方法计算:9.99乘以2.22加上3.33乘以3.34
人气:451 ℃ 时间:2019-10-17 02:01:28
解答
9.99乘以2.22加上3.33乘以3.34
=3.33×6.66+3.33×3.34
=3.33×(6.66+3.34)
=3.33×10
=33.3
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