Column 1
97-42
81
29-52
4
22+32
13
42+3
19
93-72
44
44-(2x9)
26
4+(5x3)
19
(2x6)+3
15
99-(2x4)
91
(6x6)-2
34
(4+72) x 2
106
(6+1) x 22+7
35
(6+3x5)+42
37
4+32x4
40
52-2x10
5
102-32x6-3x2
40
(102-32)x6-3x2
540
102-32x(6-3)x2
46
(42+33-7)-2x5+65
117
(12+12-32) x 4-23
37