ADDITION Self-Correcting Quiz - Up Through the ONES

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