3 + 5 =

(a)  

8 + 5 =

(a)  

7 + 7 =

(a)  

9 + 0 =

(a)  

9 + 8 =

(a)  

6 + 8 =

(a)  

10 + 8 =

(a)  

8 + 8 =

(a)  

3 + 8 =

(a)  

7 + 8 =

(a)  

9 + 9 =

(a)  

20 + 15 =

(a)  

15 + 15 =

(a)  

100 + 15 =

(a)  

70 + 80 =

(a)  

260 + 80 =

(a)  

50 + 750 =

(a)  

450 + 450 =

(a)  

90 + 510 =

(a)