2-Digit Addition
15+12
27
29-13
16
100+100
200
258
two hundred fifty-eight
17+42
59
54-11
43
100+300
400
300
three hundred
34+55
89
85-53
32
100+700
800
479
four hundred seventy-nine
72+17
89
56-28
28
800+50
850
853
eight hundred fifty-three
54+19
73
75-17
58
200+55
255
942
nine hundred forty-two