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Subtraction 14-20s
0
%
0
0
0
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17 - 16 =
1
Oops!
Okay!
19 - 4 =
15
Oops!
Okay!
17 - 13 =
4
Oops!
Okay!
18 - 10 =
8
Oops!
Okay!
20 - 15 =
5
Oops!
Okay!
15 - 12 =
3
Oops!
Okay!
14 - 2 =
12
Oops!
Okay!
14 - 9 =
5
Oops!
Okay!
14 - 6 =
8
Oops!
Okay!
15 - 5 =
10
Oops!
Okay!
18 - 9 =
9
Oops!
Okay!
19 - 4 =
15
Oops!
Okay!
15 - 6 =
9
Oops!
Okay!
20 - 3 =
17
Oops!
Okay!
17 - 5 =
12
Oops!
Okay!
16 - 0 =
16
Oops!
Okay!
18 - 7 =
11
Oops!
Okay!
16 - 13 =
3
Oops!
Okay!
20 - 2 =
18
Oops!
Okay!
16 - 4 =
12
Oops!
Okay!
19 - 19 =
0
Oops!
Okay!
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