ADDITION Self-Correcting Quiz - FOURS

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