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Java Games: Matching, concentration, word search, and flashcards.

Doubling and Halving

Can you match the pairs? Careful sometimes there will be more than one answer...but only one of them will let you clear the board!


AB
12
24
36
48
510
612
714
816
918
1020
2040
3060
4080
50100
60120
70140
80160
90180
100200
1122
1530
1428
1224
1326
1632
1734
1836
1938
4284
4590
3570
2550
55110
65130
75150
85170
95190