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4.06*55*27简算
人气:498 ℃ 时间:2020-03-27 11:10:13
解答
4.06×55×27
=2.03×(2×55)×27
=2.03×(110×27)
=2.03×2970
=2.03×3000-2.03×30
=6090-60.9
=6029.1
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