Adding/subtracting negative numbers | pre-algebra | khan, Adding and subtracting negative numbers watch the next lesson: https://www.khanacademy.org/math/pre-algebra/negatives-absolute-value-pre-alg/mult-div. Adding subtracting negative numbers | purplemath, Covers addition and subtraction of negatives, and includes a mental picture to help with the concept that 'a negative times a negative is a positive'.. What integers | integer rules - math@tutorvista., The definition of negative integer, is one of the most important topic in mathematics. negative integer is present before the zero value in the number line..

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