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

subtracting 1's

Subtract the numbers
AB
20-119
19-118
18-117
17-116
16-115
15-114
14-113
13-112
12-111
11-110
10-19
9-18
8-17
7-16
6-15
5-14
4-13
3-12
2-11
1-10

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