Share Halving and doubling
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Half of 10
5
Half of 12
6
Half of 4
2
Half of 6
3
Half of 2
1
Half of 8
4
Half of 14
7
Half of 16
8
Half of 18
9
Half of 20
10
Double 1
2
Double 2
4
Double 3
6
Double 4
8
Double 5
10
Double 6
12
