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Subtraction
Negative numbers I was trying to avoid the confusion with 2 minuses make a plus and come up with a logical method that follows on from primary - so wrote this.

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  • subraction.pptx
  • subraction.ppt

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Created: Sep 25, 2010

Updated: Oct 28, 2010

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pptx, 5 MB

subraction

Other

ppt, 11 MB

subraction

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Creative Commons "Sharealike"

Creative Commons "Sharealike"