问题 解答题
计算下列各题:
(1)-32-(-3)2+23-(-2)3
(2)(+10
1
3
)+(-11.5)+(-10
1
3
)-(+4.5);
(3)(-81)÷
9
4
×
4
9
÷(-16)

(4)
12
7
×(-
5
9
13
7
×(-
1
2
+
1
3
+
1
6
)×72-(-2)2÷4-1

(5)24×(
1
6
-
3
4
-
5
8
)+(-
1
3
2÷(-
1
72

(6)-2×32-(-2×3)2
(7)-
4
5
×[(-
1
2
)÷(0.75-1)+(-2)5]
答案

(1)原式=-9-9+8-(-8)=-18+8+8=-2;

(2)(+10

1
3
)+(-11.5)+(-10
1
3
)-(+4.5);

=(10

1
3
-10
1
3
)+(-11.5)+(-4.5)

=0+(-16)

=-16;

(3)原式=-81×

4
9
×
4
9
×(-
1
16
)=1;

(4)原式=

12
7
×(-
5
9
)×
7
13
×0×72-4÷4-1=0-1-1=-2;

(5)原式=4-18-15+8+(-8)=-29;

(6)原式=-2×9-(-6)2=-18-36=-54;

(7)原式=-

4
5
×[(-
1
2
)÷(-0.25)+(-32)]=-
4
5
×(-30)=24.

单项选择题
单项选择题