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Oral Subtraction
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%
0
0
0
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Restart
81-18
63
Oops!
Okay!
32-9
23
Oops!
Okay!
41-18
23
Oops!
Okay!
72-29
43
Oops!
Okay!
22-7
15
Oops!
Okay!
52-18
34
Oops!
Okay!
91-28
63
Oops!
Okay!
90-19
71
Oops!
Okay!
91-9
82
Oops!
Okay!
24-7
17
Oops!
Okay!
92-19
73
Oops!
Okay!
82-18
64
Oops!
Okay!
53-9
44
Oops!
Okay!
21-9
12
Oops!
Okay!
63-18
45
Oops!
Okay!
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