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ADDITION AND SUBSTRACTIONS
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25+18
43
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Okay!
38-14
24
Oops!
Okay!
12+44
16
Oops!
Okay!
1-1
0
Oops!
Okay!
9-7
2
Oops!
Okay!
4+7
11
Oops!
Okay!
11-6
5
Oops!
Okay!
13+0
13
Oops!
Okay!
15-8
7
Oops!
Okay!
14-8
6
Oops!
Okay!
15+35
10
Oops!
Okay!
15-5
10
Oops!
Okay!
9+5
14
Oops!
Okay!
6-2
4
Oops!
Okay!
14-7
7
Oops!
Okay!
9+5
14
Oops!
Okay!
9+8
17
Oops!
Okay!
10-3
7
Oops!
Okay!
1+1
2
Oops!
Okay!
44-13
31
Oops!
Okay!
5+7
12
Oops!
Okay!
8+48
56
Oops!
Okay!
46-8
38
Oops!
Okay!
12-6
6
Oops!
Okay!
13-5
8
Oops!
Okay!
18-9
9
Oops!
Okay!
8+2
10
Oops!
Okay!
5-4
1
Oops!
Okay!
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