subtract
50-36
20
50x30
1500
56+36
92
316+416
732
899-799
100
60-50
10
30x40
1200
50+99
149
532+728
1260
740x640
473600
100-78
22
99x60
5940
16+216
232
218+219
437
150+40
190
80-34
46
50x20
1000
50+159
209
220+224
444
789+652
1441
214-104
110
100x90
9000
14+67
81
490+450
940
100x50
5000