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Study
Addition + Subtraction
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%
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22 + 44 =
66
Oops!
Okay!
17 - 4 =
13
Oops!
Okay!
45 + 42 =
87
Oops!
Okay!
12 - 12 =
0
Oops!
Okay!
81 + 15 =
96
Oops!
Okay!
22 + 71 =
93
Oops!
Okay!
13 - 6 =
7
Oops!
Okay!
13 - 5 =
8
Oops!
Okay!
54 + 42 =
96
Oops!
Okay!
44 + 20 =
64
Oops!
Okay!
10 - 8 =
2
Oops!
Okay!
16 - 6 =
10
Oops!
Okay!
11 - 2 =
9
Oops!
Okay!
14 - 3 =
11
Oops!
Okay!
23 + 46 =
69
Oops!
Okay!
73 + 11 =
84
Oops!
Okay!
60 + 13 =
73
Oops!
Okay!
9 - 2 =
7
Oops!
Okay!
10 + 32 =
42
Oops!
Okay!
10 - 0 =
10
Oops!
Okay!
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