计算:1996+1995-1994-1993+1992+1991-1990-1989+…+4+3-2-1,结果是______.
人气:434 ℃ 时间:2019-10-19 21:19:58
解答
1996+1995-1994-1993+1992+1991-1990-1989+…+4+3-2-1,
=(1996+1995-1994-1993)+(1992+1991-1990-1989)+…+(4+3-2-1),
=4+4+…+4,
=1996.
故答案为:1996.
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