209 + 12 =

(a)  

553 + 138 =

(a)  

405 + 106 =

(a)  

843 + 138 =

(a)  

785 + 115 =

(a)  

127 + 343 =

(a)  

55 + 206 =

(a)  

89 + 511 =

(a)  

317 + 594 =

(a)