3 - 1 =

(a)  

1 + 4 =

(a)  

0 + 5 =

(a)  

0 + 4 =

(a)  

2 - 1 =

(a)  

2 + 2 =

(a)  

4 - 0 =

(a)  

1 + 0 =

(a)  

1 - 1 =

(a)  

4 + 1 =

(a)  

0 + 2 =

(a)  

3 -1 =

(a)  

1 + 2 =

(a)  

5 - 0 =

(a)  

2 + 0 =

(a)  

2 + 3 =

(a)  

3 - 0 =

(a)  

0 + 1 =

(a)  

3 + 2 =

(a)