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ADDITION Self-Correcting Quiz - Up Through the THREES

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