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SUBTRACTION Self-Correcting Quiz - ZEROS

1
4
-  0
2
5
-  0
3
1
-  0
4
2
-  0
5
1
-  0
6
5
-  0
7
9
-  0
8
6
-  0
9
8
-  0
10
4
-  0
11
9
-  0
12
3
-  0
13
6
-  0
14
8
-  0
15
7
-  0
16
7
-  0
17
2
-  0
18
3
-  0
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