5+5
10
4-3
1
2x4
8
4:2
2
81+8
89
12+5
17
10-8
5x5
20
16:2
70-2
68
20+50
70
50-4
46
8x6
48
32:2
16
11x5
55
100+99
199
100-50
50
9x0
0
100:10
81:9
9
125+20
145
189-64
125
10x10
100
500:5
500+500
1000
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