12+27
39
17-5
12
6x6
36
12/3
4
47+95
142
67-48
19
12x7
84
90/15
6
36+23+11
70
375-162
213
17x13
221
432/16
27
124+782
906
836-391
69x34
2346
4984/56
89
1093+2659
3752
5715-3618
2097
203x128
25984
9798/138
71