问题 解答题
计算:
(1)(-3)+(-4)-(+11)-(-9);
(2)-
1
6
×5-
1
6
×(-4)+
1
6
×(-8)

(3)-6÷(-0.25)×
11
24
÷2

(4)[-32×(-
1
3
)
2
-0.8]×4
1
2
÷(-5
1
4
)
答案

(1)原式=(-3)+(-4)+(-11)+(+9),

=-18+9,

=-9;

(2)原式=-

5
6
-(-
4
6
)+(-
8
6
),

=-

5
6
+(+
4
6
)+(-
8
6
),

=-

3
2

(3)原式=-6×(-4)×

11
24
×
1
2

=24×

11
24
×
1
2

=

11
2

(4)原式=[-9×

1
9
-
4
5
9
2
÷(-
21
4
),

=-

9
5
×
9
2
×(-
4
21
),

=

54
35

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