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简便计算:
(1)123452-12344×12346.
(2)3.76542+0.4692×3.7654+0.23462
人气:493 ℃ 时间:2020-05-02 10:01:35
解答
(1)原式=123452-(12345-1)×(12345+1)=123452-(123452-1)=123452-123452+1=1;
(2)原式=3.76542+2×0.2346×3.7654+0.23462=(3.7654+0.2346)2=42=16;
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