ADDITION Self-Correcting Quiz - SIXES

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