ADDITION Self-Correcting Quiz - NINES

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