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33.7*121+337*42.2+337*54.3的简便方法
人气:163 ℃ 时间:2020-01-30 07:57:52
解答
33.7*121+337*42.2+337*54.3
=337x12.1+337*42.2+337*54.3
=337x(12.1+42.2+54.3)
=337x108.6
=36598.2
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