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Addition/Subtraction to 20
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6 + 9
15
Oops!
Okay!
6 + 6
12
Oops!
Okay!
9 + 4
13
Oops!
Okay!
16 - 8
8
Oops!
Okay!
10 - 3
7
Oops!
Okay!
11 - 4
7
Oops!
Okay!
10 - 4
6
Oops!
Okay!
4 + 8
12
Oops!
Okay!
14 - 7
7
Oops!
Okay!
15 - 6
9
Oops!
Okay!
16- 7
9
Oops!
Okay!
9 + 9
18
Oops!
Okay!
11 + 7
18
Oops!
Okay!
10 - 2
8
Oops!
Okay!
7 + 5
12
Oops!
Okay!
15 - 7
8
Oops!
Okay!
13 - 8
5
Oops!
Okay!
5 + 8
13
Oops!
Okay!
12 - 7
5
Oops!
Okay!
19 - 7
12
Oops!
Okay!
2 + 6
8
Oops!
Okay!
11 + 6
17
Oops!
Okay!
17 - 5
12
Oops!
Okay!
6 + 7
13
Oops!
Okay!
10 + 5
15
Oops!
Okay!
8 + 7
15
Oops!
Okay!
14 - 6
8
Oops!
Okay!
18 - 9
9
Oops!
Okay!
7 + 6
13
Oops!
Okay!
7 + 8
15
Oops!
Okay!
1 + 8
9
Oops!
Okay!
13 - 6
7
Oops!
Okay!
11 - 5
6
Oops!
Okay!
2 + 7
9
Oops!
Okay!
17 - 8
9
Oops!
Okay!
13 - 5
8
Oops!
Okay!
4 + 7
11
Oops!
Okay!
5 + 7
12
Oops!
Okay!
12 - 8
4
Oops!
Okay!
18 - 7
11
Oops!
Okay!
12 - 6
6
Oops!
Okay!
1 + 9
10
Oops!
Okay!
3 + 9
12
Oops!
Okay!
8 + 6
14
Oops!
Okay!
8 + 8
16
Oops!
Okay!
17 - 9
8
Oops!
Okay!
4 + 9
3
Oops!
Okay!
12 + 5
17
Oops!
Okay!
18 - 6
12
Oops!
Okay!
16 - 9
7
Oops!
Okay!
14 - 9
5
Oops!
Okay!
15 - 9
6
Oops!
Okay!
11 - 3
8
Oops!
Okay!
20 - 10
10
Oops!
Okay!
3 + 7
10
Oops!
Okay!
9 + 3
12
Oops!
Okay!
5 + 9
14
Oops!
Okay!
3 + 8
11
Oops!
Okay!
19 - 8
11
Oops!
Okay!
10 + 9
19
Oops!
Okay!
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