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ADDITION Self-Correcting Quiz - SIXES

1
0
+  6
2
6
+  9
3
5
+  6
4
6
+  8
5
8
+  6
6
1
+  6
7
6
+  3
8
6
+  7
9
6
+  4
10
3
+  6
11
6
+  0
12
2
+  6
13
6
+  5
14
6
+  6
15
4
+  6
16
6
+  1
17
6
+  2
18
7
+  6
19
9
+  6
20
6
+  6
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