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10 questions
21+32=
67
53
63
57
52+71=
123
3519
353
1219
85+53=
138
51
4049
4013
53+102=
54
155
101
154
131+53=
157
1523
87
1529
75−21=
143
54
144
74
74−41=
43
283
289
113
85−31=
247
54
61
47
97−52=
4517
45
455
417
231−23=
34
611
51
65
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