ADDITION Self-Correcting Quiz - ONES

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