Addition
18
+ 9
_______
27
25
+ 13
___________
38
38
- 6
__________
32
86
- 14
__________
72
123
+ 65
_____________
188
65
+ 27
__________
92
46
+ 46
________
92
82
- 65
____________
17
91
- 63
_____________
28
- 89
_____________
164
206
+ 99
__________
305
189
+ 67
__________
256
186
- 77
__________
109
265
- 48
__________
217
17
25
36
+23
_________
101