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ADDITION Self-Correcting Quiz - FOURS

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