Doubling and Halving

Front

Double of 2

Back

4

Front

Double of 4

Back

8

Front

Double of 8

Back

16

Front

Double of 16

Back

32

Front

Double of 64

Back

128

Front

Double of 128

Back

256

Front

Double of 32

Back

64

Front

Double of 3

Back

6

Front

Double of 6

Back

12

Front

Double of 12

Back

24