Lesson 4
37+37=
73
74
75
76
77
78
79
80
72
71
70
What's This "+" symbol called
Plus
Minus
Times
Division logo
What's This "-" symbol called
Plus
Minus
Times
Division logo
55-0
50
51
52
53
54
55
56
57
58
59
60
Who easy was lesson 4?
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