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ADDITION Self-Correcting Quiz - NINES

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