Addition
32+47
79
52-31
21
4*6
24
15/3
DCXLIII+CCLXXXI
DCXLIII=643 CCLXXXI=281 A:924
67+35
102
78-49
29
5*9
45
110/10
11
518+251
769
589-425
164
12*5
60
25/0.5
50
483+738
1221
768-479
289
31*7
217
256/2
128
3982+1248
5230
6572-3627
2945
27*9
243
3600/60
60
46
4096