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ADDITION Self-Correcting Quiz - FOURS

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