ADDITION Self-Correcting Quiz - ONES

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