Question

直接写出得数 2 7 + 5 7 = 1 8 + 1 4 = 0.6+ 1 2 = 0.5+ 1 3 = 1- 2 5

Answer 1

2

7 +

5

7 =1，

1

8 +

1

4 =

3

8 ， 0.6+

1

2 =1.1， 0.5+

1

3 =

5

6 ，

1-

2

5 =0.6，

3

4 -

1

2 =0.25， 0.8-

3

5 =0.2，

1

3 -0.2 =

2

15 ．