Question

-2

1

2

与|-1

1

4

|的和、积、差分别是______．

Answer 1

-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

．