ADDITION Self-Correcting Quiz - SEVENS

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