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ADDITION Self-Correcting Quiz - Up Through the THREES

1
8
+  3
2
7
+  3
3
3
+  4
4
2
+  6
5
2
+  3
6
7
+  2
7
4
+  3
8
3
+  5
9
5
+  3
10
2
+  1
11
8
+  2
12
9
+  2
13
3
+  9
14
0
+  2
15
2
+  9
16
3
+  3
17
3
+  2
18
3
+  3
19
3
+  6
20
2
+  2
21
2
+  7
22
3
+  8
23
2
+  5
24
5
+  2
25
6
+  3
26
2
+  4
27
3
+  7
28
2
+  8
29
2
+  2
30
4
+  2
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