Advertisement

ADDITION Self-Correcting Quiz - THREES

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