adding
12+89=
101
7X8=
56
12 \ 6
2
126-97=
29
59+14=
73
78+19=
97
7X3=
21
123\1
123
856-846=
10
91-47=
44
787+75=
862
12X13=
156
24\4
6
947-788=
159
75\4
18
483+639=
1,122
34X26=
884
8\4
2
999-836=
163
88X15
1,320
646+974=
1,620
47X57=
2,679
99\9
11
7,196-4,668=
2,528
749+857=
1,606