ADDITION Self-Correcting Quiz - Up Through the NINES

1
7
+  8
2
3
+  9
3
9
+  4
4
8
+  2
5
7
+  9
6
9
+  8
7
4
+  4
8
1
+  0
9
8
+  8
10
9
+  5
11
2
+  6
12
8
+  6
13
2
+  5
14
3
+  2
15
5
+  7
16
4
+  5
17
6
+  6
18
9
+  2
19
8
+  5
20
4
+  2
21
4
+  7
22
3
+  5
23
5
+  5
24
3
+  6
25
7
+  3
26
2
+  2
27
6
+  5
28
4
+  3
29
6
+  7
30
5
+  9
31
4
+  6
32
7
+  7
33
8
+  4
34
6
+  6
35
8
+  1
36
9
+  9
37
3
+  3
38
7
+  2
39
3
+  8
40
9
+  6