Java Games: Flashcards, matching, concentration, and word search.

subtracting 4's

Subtract the numbers

AB
20-415
19-415
18-414
17-413
16-412
15-411
14-410
13-49
12-48
11-47
10-46
9-45
8-44
7-43
6-42
5-41
4-40

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