+
-
x
100
95+55
150
100
9-3
6
100
2x9
18
200
255+1000
1255
200
111-12
99
200
5x6
30
300
50+30
80
300
50-35
25
300
2x8
16
400
20+30+50
100
400
4000-500
3500
400
7x7
49
500
50=60
110
500
500-300
200
500
3x10
30