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SUBTRACTION Self-Correcting Quiz - EIGHTS

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