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ADDITION Self-Correcting Quiz - Up Through the THREES

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