Multiply by 2

Front

2 X 1 = ?

Back

2

Front

2 X 2 = ?

Back

4

Front

2 X 3 = ?

Back

6

Front

2 X 4 = ?

Back

8

Front

2 X 5 = ?

Back

10

Front

2 X 6 = ?

Back

12

Front

2 X 7 = ?

Back

14

Front

2 X 8 = ?

Back

16

Front

2 X 9 = ?

Back

18

Front

2 X 10 = ?

Back

20