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ADDITION Self-Correcting Quiz - ZEROS

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