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Starting to Understand Subtraction

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  • 2 take away 1 is
    1
  • 4 take away 4 is
    0
  • Take apart 6
    1 and 5, 5 and 1, 2 and 3, 3 and 2, 3 and 3
  • 12 take away 2 is
    10
  • 9 take away 3 is
    6
  • Take apart 3
    2 and 1 or 1 and 2
  • 6 take away 2 is
    4
  • Take apart 9
    1 and 8, 8 and 1, 2 and 7, 7 and 2, 3 and 6, 6 and 3, 4 and 5, 5 and 4
  • Take apart 7
    1 and 6, 6 and 1, 3 and 4, 4 and 3, 2 and 5, 5 and 2
  • 5 take away 3 is
    2
  • Take apart 5
    1 and 4, 4 and 1, 2 and 3, 3 and 2
  • Take apart 8
    1 and 7, 7 and 1, 2 and 6, 6 and 2, 3 and 5, 5 and 3, 4 and 4
  • 3 take away 2 is
    1
  • Take apart 4
    1 and 3, 3 and 1, 2 and 2
  • Take apart 2
    1 and 1
  • Take apart 10
    1 and 9, 9 and 1, 2 and 8, 8 and 2, 3 and 7, 7 and 3, 4 and 6, 6 and 4, 5 and 5
  • 7 take away 2 is
    5
  • 8 take away 4 is
    4
  • 10 take away 5 is
    5
  • Take apart 11
    1 and 10, 10 and 1, 2 and 9, 9 and 2, 3 and 8, 8 and 3, 4 and 7, 7 and 4, 5 and 6, 6 and 5