题目内容

计算:
(1)(-3.75)+2.85+(-1
1
4
)+3.15
(2)0.47-4
5
6
-(-1.53)-1
1
6

(3)(-17)+23+(-53)+(+36)
(4)8+(-
1
4
)-5-(-0.25)
(1)原式=-3.75+2.85-1.25+3.15
=-3.75-1.25+2.85+3.15
=-5+6
=1;

(2)原式=0.47+1.53-4
5
6
-1
1
6

=2-6
=-4;

(3)原式=-17+23-53+36=-17-53+23+36
=-70+79
=9;

(4)原式=8-0.25-5+0.25
=8-5
=3.
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