问题 解答题
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)
答案

(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.

单项选择题
名词解释