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9 facts add and subtract

Terms

undefined, object
copy deck
17-9
8
15-9
6
9-9
0
9+8
8+9
17
9+9
18
9+5
5+9
14
0+9
9+0
9
9+4
4+9
13
11-9
2
9+6
6+9
15
9+2
2+9
11
9+7
7+9
16
1+9
9+1
10
9+3
3+9
12
14-9
5
10-9
1
13-9
4
18-9
9
16-9
7
12-9
3

Deck Info

20