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11...1(1000个1)减22.2(500个2)等于多少?
人气:267 ℃ 时间:2019-09-29 05:58:03
解答
11...1(1000个1)减22.2(500个2)
=11.1(500个)00.0(500个)+11...1(500个)-22...2(500个)
=11...1(499个)+100...0(500个0)-11...1(500个)
=11..1(499个)088...(499个8)9
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