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ADDITION Self-Correcting Quiz - SIXES

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