来自姜春福的问题
简便计算1.111×63＋777×912.9999×7778+3333×66663.9999×9999＋19999
简便计算1.111×63＋777×912.9999×7778+3333×66663.9999×9999＋19999
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2020-06-24 20:24
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高晓杰
简便计算：1.111×63＋777×91=111*（63+7*91）=111*700=777002.9999×7778+3333×6666=9999*（7778+2222）=9999*10000=999900003.9999×9999＋19999=9999*（10000-1）+19999=99990000-9999+19999=99990000+10000...
2020-06-24 20:29:17
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