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Published byLindsey Carr Modified over 8 years ago

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The Integer Family Developed by Ivan Seneviratne

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Integer Addition

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A Positive Plus a Positive You add and make it positive. +3 + +9 =+3 + +9 = +12

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A Negative Plus a Negative You add and make it negative. -3 + -9 = -3 + -9 = -12 - 3 - 9 = -12

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A Positive Plus A Negative Subtract the absolute values and then you take the sign of, the farthest one from zero. +3 + -9 = -3 + +9 = +3 + -9 = -6 -3 + +9 = +6

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Integer Subtraction Developed by Ivan Seneviratne

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Integer Subtraction You have to add the opposite. Keep it, change it, change it. Then follow the adding rules. +3 -+9 = +3 -+9 = -6 -3 - - 9 =-3 - - 9 = +6

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+3 -+9 = -3 - -9 = -3 - +9 = +3 - -9 = +3 -+9 = -6 -3 - -9 = 6 -3 - +9 = -12 +3 - -9 = 12

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Integer Multiplication & Division

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Multiplication and Divide The signs the same its positive. -3 (-7) = Its negative if they’re not. 3 (7) = -3 (7) = -213 (-7) = -3 (-7) = +213 (7) = +21 -3 (7) =3 (-7) = -21

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-3 (-9) = -3 - +9 = +3 - +9 = -3 (-8) = -3 - +9 = -12 +3 - +9 = -6 -3 (+9) = -2 (-9) = -3 - -9 = +3 (+9) = -3 (+9) = -27 -3 (-8) = 24 -3 (-9) = +27 +3 (+9) = +27 -3 - -9 = +6 -2 (-9) = +18

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-3 - -9 = -3 - + 9 = +2 - -9 = -7 - - 9 = -3 - -9 = -6 -3 - + 9 = -12 +2 - -9 = -7 -7 - -9 = +2 2 (-9) = -3 (8) = +4 (-9) = +5 (+6) =+5 (+6) = +30 2 (-9) = -18 +4 (-9) = -36 -3 (8) = -24

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This presentation is developed by Ivan Seneviratne © 2006 purely for personal use. ivanthexplorer@yahoo.co.uk

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