addition
300+300
600
500-300
200
10x9
90
100/2
50
x
10
309+310
619
100-60
40
202x2
404
1004/2
502
cm
900
321+ 329
650
370-280
90
45x6
230
67/5
a13 r2
cmix
909
430+ 200
630
477-388
89
123x9
1107
701/8
a87 r5
mmcmv
2909
4001+4509
8510
711-699
12
612x8
4896
751/8
a93 r7
m
1000