计算,能简算的要简算. 6.12++2.88.
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解:(1)6.12++2.88,
=(6.12+2.88)+(),
=9+1,
=10;
(2)-(-),
=-+,
=1+,
=1;
(3)++,
=(+)+(),
=1+0,
=1;
(4)--,
=-(+),
=-1,
=;
(5)+,
=,
=;
(6),
=,
=;
(7),
=,
=;
(8),
=,
=.
解析分析:(1)(3)根据加法交换律和加法结合律进行计算;
(2)(4)(7)根据减法的性质进行计算;
(5)(6)先通分,再计算;
(8)先算括号里面的,再算加法.
点评:本题主要考查了学生四则运算的计算能力,以及有计算中灵活运用简便算法的计算能力.