9+9
18
20-10
10
5x5
25
40/10
4
100+12
112
100-50
50
12x8
96
200/5
40
500+200
700
500-400
100
9x9
81
40/5
8
700+700
1400
900-500
400
10x12
120
80/2
1927+3189
5116
5637-1234
4404
56x12
672
500/50