问题 解答题
计算下列各题:
(1)(-4
1
2
)+(+5
1
2
)+(+4.5)
(2)18-8÷(-2)+4×(-5)
(3)-12×2+(-2)3÷4-(-3)
(4)(1
3
4
-
5
6
-1
5
12
÷(-
1
36
)
答案

(1)原式=(-4.5+4.5)+5.5

=5.5;

(2)原式=18+4-20

=2;

(3)原式=-1×2-8÷4+3

=-2-2+3

=-1;

(4)原式=(

7
4
-
5
6
-
17
12
)×(-36)

=-63+30+51

=18.

单项选择题
单项选择题