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数学
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9999×7778+3333×6666怎么简算啊
5.6×69.32+138.64×0.05+693.2×0.43又怎样简算啊
人气:217 ℃ 时间:2019-12-01 10:21:33
解答
把3333*6666写成9999*2222计算得9999*(7778+2222)即9999*10000
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9999×7778+3333×6666的简便计算?
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