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Subdition is an innovative way of subtracting without borrowing or regrouping. There are three rules that govern Subdition that are very easy to comprehend. A) The Five Rule B) The Ten Rule C) The Traditional Rule The following PowerPoint presentation explains these rules and how and when to apply them.
This resource was reviewed using the Curriki Review rubric and received an overall Curriki Review System rating of 3, as of 2013-06-28.