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ADD AND SUBSTRACT
0
%
0
0
0
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Restart
50+450
500
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Okay!
20-8
12
Oops!
Okay!
200+250
450
Oops!
Okay!
105+200
305
Oops!
Okay!
100-65
35
Oops!
Okay!
45+17
62
Oops!
Okay!
89-6
83
Oops!
Okay!
15+15
30
Oops!
Okay!
70-20
50
Oops!
Okay!
10+10
20
Oops!
Okay!
20-20
0
Oops!
Okay!
60-5
55
Oops!
Okay!
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