问题 解答题
计算
(1)(-1.5)+
1
2
-(-
3
5
)-0.2;
(2)2
1
4
×(-
6
7
)÷(
1
2
-2)

(3)-32-[-5+(1-0.6×
3
5
)÷(-3)2].
答案

(1)原式=-1.5+

1
2
+
3
5
-0.2

=-1+0.4

=-0.6;

(2)原式=-

9
4
×
6
7
÷(-
3
2

=-

9
7

(3)原式=-9-[-5+(1-

9
25
)÷9]

=-9-[-5+

16
25
÷9]

=-9-[-5+

16
225
]

=-9+5-

16
225

=-4

16
225

单项选择题 A3/A4型题
问答题 简答题