问题 解答题
(1)-32÷[-
1
2
+(-1
3
4
)]
(2)(1
1
3
+
1
8
-2.75)×(-24)+(-1)2009-|-2|3
(3)-36×(
1
4
-
1
9
-
1
12
)÷(-2)
答案

(1)原式=-9÷(-

9
4

=9×

4
9

=4;

(2)原式=

4
3
×(-24)+
1
8
×(-24)-2.75×(-24)-1-23

=-32-3+66-1-8

=22;

(3)原式=[(-36)×

1
4
-(-36)×
1
9
-(-36)×
1
12
]÷(-2)

=[-9+4+3]÷(-2)

=(-2)÷(-2)

=1.

单项选择题
单项选择题