1+1=
2
355+219=
574
10-5=
5
5+6=
11
639+119=
758
19-11=
8
12+15=
27
453+225
678
29-16=
13
37+48=
85
879+495=
1324
45-28=
17
200+315=
515
687+273=
960
79-69=
10
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