问题 解答题
计算:
(1)0-
1
2
-(-3.25)+2
3
4
-7
1
2

(2)(-3
2
3
)+(-2.4)-(-
1
3
)-(-4
2
5
)
-(-4
2
5

(3)|-7
3
8
+4
1
2
|+(-18
1
4
)+|-6-
1
2
|
答案

(1)0-

1
2
-(-3.25)+2
3
4
-7
1
2
=-
1
2
-7
1
2
+3
1
4
+2
3
4
=-8+6=-2

(2)(-3

2
3
)+(-2.4)-(-
1
3
)-(-4
2
5
)
-(-4
2
5
)=-3
1
3
+2=-1
1
3

(3)|-7

3
8
+4
1
2
|+(-18
1
4
)+|-6-
1
2
|=-2
7
8
-18
1
4
+6
1
2
=-14
5
8

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