Study

Halving and doubling

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  • Double 4
    8
  • Double 7
    14
  • Double 10
    20
  • Double 1
    2
  • Double 2
    4
  • Half of 10
    5
  • Half of 16
    8
  • Double 3
    6
  • Half of 4
    2
  • Half of 2
    1
  • Double 5
    10
  • Half of 18
    9
  • Half of 20
    10
  • Double 9
    18
  • Double 8
    16
  • Double 6
    12
  • Half of 6
    3
  • Half of 8
    4
  • Half of 14
    7
  • Half of 12
    6
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