ADDITION Self-Correcting Quiz - NINES

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