问题 解答题
计算:
(1)-24-(10-15)
(2)(-7)+(+6)-(+9)-(-4)
(3)1-(-
1
2
)+(-
1
3
)-
1
6

(4)(-4
7
8
)-(-5
1
2
)+(-4
1
4
)-3
1
8
答案

(1)原式=-24-(-5)

=-24+5

=-19;

(2)原式=-7+6-9+4

=-7-9+6+4

=-16+10

=-6;

(3)原式=1+

1
2
-
1
3
-
1
6

=

6
6
+
3
6
-
2
6
-
1
6

=1;

(4)原式=-4

7
8
+5
1
2
-4
1
4
-3
1
8

=-4

7
8
-3
1
8
+5
1
2
-4
1
4

=-8+

22
4
-
17
4

=-8+1

=-7.

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