Addition
10 + 10
20
15-5
10
2x7
14
10/2
5
9+7
16
25+13
38
23-5
18
5x5
25
20/10
2
23-7
16
28+15
43
35-16
19
10x60
600
100/5
20
25x5
125
103+17
120
100-23
77
12x13
156
153/3
51
30/10
3
123+85
208
222-83
139
15x12
180
189/5
37.8
85/2
42.5