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### 11 Cards in this Set

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 In algebraic addition, we let the signs tell us whether the numbers are positive or negative, and we mentally insert parentheses and extra _______ signs as necessary. plus The sum of any real number and its opposite is _____. zero The only number that does not have an additive inverse is _____. zero What is the opposite of 1/2? -1/2 What is the additive inverse of 15? -15 Simplify: -5-2+7-6 (-5)+(-2)+(+7)+(-6)= (-7)+(+7)+(-6)= (0)+(-6)= -6 In algebraic addition, 4-3+2 means (+4)+(__)+(+2). -3 Another name for the opposite of a number is the _________ ___________ of the number. additive inverse To add two signed numbers that have the SAME sign, we add the absolute values of the numbers and _______ the sign. copy a-b=a+(__) -b To add two signed numbers that have DIFFERENT signs, we subtract the absolute values of the numbers and think " the ________ army wins." biggest