Math test sub and add

24+13
73
35
37
82-50
30
12
28
74-22
50
52
62
52+32
87
77
97
77-44
34
35
33
0
36+2
63
52
62
0
48+22
72
70
60
0
Dont know
92-13
79
0
69
78
36-13
21
23
49
0
63+23
76
86
96
None
78-35
53
44
43
None
55+32
90
92
80
{"name":"Math test sub and add", "url":"https://www.quiz-maker.com/QPREVIEW","txt":"24+13, 82-50, 74-22","img":"https://www.quiz-maker.com/3012/images/ogquiz.png"}
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