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999+998+997十996+1000+1004+1003+1002+1001.
人气:239 ℃ 时间:2019-10-17 03:27:25
解答
999+998+997+996+1000+1004+1003+1002+1001
=(999+1001)+(998+1002)+(997+1003)+(996+1004)+1000,
=2000×4+1000,
=9000.
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