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6.82除以0.31乘2.7-18.3怎么巧算
人气:404 ℃ 时间:2020-07-03 03:16:20
解答
6.82除以0.31乘2.7-18.3
=(6.2÷0.31+0.62÷0.31)×2.7-18.3
=22×2.7-18.3
=59.4-18.3
=41.1
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