10+9
19
10-9
1
10x9
90
10/9
1.11
20+11
31
20-11
9
20x11
220
20/11
1.81
30+22
52
30-22
8
30x22
660
30/22
1.37
40+33
73
40-33
7
40x33
1320
40/33
1.21
50+44
94
50-44
6
50x44
2200
50/44
1.136