Addition
150+20
170
50-12
38
1x15
15
49/7
7
40x20
80
136+117
153
100-65
35
4x9
36
100/10
10
100/4
25
260+210
270
150-60
90
5x8
40
200/2
100
130+270
400
115+225
230-155
75
7x8
56
121/11
11
120/10
12
400+330
730
300-150
150
9x9
81
150/5
30
480-260
220