问题 填空题
-2
1
2
与|-1
1
4
|的和、积、差分别是______.
答案

-2

1
2
+|-1
1
4
|=-2
1
2
+1
1
4
=-1
1
4

-2

1
2
×|-1
1
4
|=-2
1
2
×1
1
4
=-
5
2
×
5
4
=-
25
8

-2

1
2
-|-1
1
4
|=-2
1
2
-1
1
4
=-3
3
4

故答案是:-1

1
4
,-
25
8
,-3
3
4

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