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下面各题能简便的要简便.15-8.13-1.875.14+3.225-6.3023.95+5.36-1.9513.67-(5.45+3.67)4.26+5.48-1.26+4.5214.67+25.91+15.33+4.09.

题目详情
下面各题能简便的要简便.
15-8.13-1.87
5.14+3.225-6.302
3.95+5.36-1.95
13.67-(5.45+3.67)
4.26+5.48-1.26+4.52
14.67+25.91+15.33+4.09.
▼优质解答
答案和解析
(1)15-8.13-1.87,
=15-(8.13+1.87),
=15-10,
=5;

(2)5.14+3.225-6.302,
=8.365-6.302,
=2.063;

(3)3.95+5.36-1.95,
=3.95-1.95+5.36,
=2+5.36,
=7.36;

(4)13.67-(5.45+3.67),
=13.67-5.45-3.67,
=13.67-3.67-5.45,
=10-5.45,
=4.55;

(5)4.26+5.48-1.26+4.52,
=(4.52+5.48)+(4.26-1.26),
=10+3;
=13;

(6)14.67+25.91+15.33+4.09,
=(14.67+15.33)+(25.91+4.09),
=30+30,
=60.