ADDITION Self-Correcting Quiz - SEVENS

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