3 - Addition
4+5
9
10-2
8
1x4
4
1430+240
1670
900-250
650
5x5
25
9+12
21
65-23
42
0x8
8
1057+798
1855
1093-896
197
6x6
36
26+32
58
102-40
82
2x3
6
13488+2499
15987
40,088-27,943
12,145
7x7
49
157+206
363
615-67
548
3x4
12
590,425-7,467
582,958
140,889-80,906
59,983
8x7
56
1308-293
1015
1056-688
368
4x5
20
48,877+51,809
100,686
806,833-467,084
339,749
11x11
121