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ADDITION Self-Correcting Quiz - Up Through the THREES

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