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ADDITION Self-Correcting Quiz - ZEROS

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