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7.2

Unit Vocabulary

TermDefinition
Adding integers with the same sign same signs add and keep the sign ex. 2- + -4 = -6 2 + 4 = 6
Adding integers with different signs Subtract the integers. Keep the sign of the greatest absolute value ex. 2 + -4 = -2 -2 + 4 -2
Subtracting Integers Add the opposite or Keep, change, change Then follow addition rules keep 1st #, change (-) to (+), change sign of 2nd # ex. -4 - 2 = -4 + -2 = -6
Distance between two integers Find the absolute value of the difference (subtract) of the two integers
Additive inverse The opposite of a number the sum of a number and its additive inverse is 0 ex. 5 + -5 = 0
absolute value The distance a number is from zero on a number line. ALWAYS POSITIVE .The notation is 2 bars. ex. the absolute value of 5 is 5, the absolute value of -5 is 5
Multiplying or dividing integers with different signs negative ex. 5 x -2 = -10 ex. -10/2= -5
Multiplying or dividing integers with same signs positive ex. 5x5=25 -25/-5=5
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