ADDITION Self-Correcting Quiz - ZEROS

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