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111111111×999999999的简便计算,答案标准的话,到时候悬赏5财富!
人气：448 ℃ 时间：2020-05-28 11:45:02
解答
111111111×999999999
=111111111×(1000000000-1)
=111111111000000000-111111111
=111111110999999999+1-111111111
=111111110888888888+1
=111111110888888889
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