39 + 32

(a)  

66 + 38

(a)  

437 + 92

(a)  

442 + 63

(a)  

462 + 91

(a)  

372 + 236

(a)  

594 + 326

(a)  

1,167 + 1,565

(a)  

2,349 + 1,479

(a)