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ADDITION Self-Correcting Quiz - NINES

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