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ADDITION Self-Correcting Quiz - SIXES

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