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

(3)-32-[-5-0.2÷
4
5
×(-2)2]
(4)24×(
1
6
-
3
4
-
5
8
)+(-
1
3
2÷(-
1
72

(5)(-2.5)÷3÷(-
1
6
)×(-22)

(6)-2•(-
1
2
)2+|-(-2)|3-(-
1
2
)
答案

(1)原式=(+10

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

=0+(-16),

=-16;

(2)原式=-16÷(-16),

=1;

(3)原式=-9-[-5-1]

=-9+6

=-3;

(4)原式=24×

1
6
-24×
3
4
-24×
5
8
+
1
9
×(-72),

=4-18-15+(-8),

=-37;

(5)-2.5×

1
3
×(-6)×(-4),

=20;

(6)原式=-2×

1
4
+8+
1
2

=8.

单项选择题
单项选择题