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Starting to Understand Subtraction

  •  English    20     Public
    Use counter sot take away and take apart numbers
  •   Study   Slideshow
  • 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
  •  20
  • 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
  •  20
  • 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
  •  20
  • Take apart 6
    1 and 5, 5 and 1, 2 and 3, 3 and 2, 3 and 3
  •  20