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11 Cards in this Set
- Front
- Back
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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.
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plus
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The sum of any real number and its opposite is _____.
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zero
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The only number that does not have an additive inverse is _____.
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zero
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What is the opposite of 1/2?
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-1/2
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What is the additive inverse of 15?
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-15
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Simplify: -5-2+7-6
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(-5)+(-2)+(+7)+(-6)=
(-7)+(+7)+(-6)= (0)+(-6)= -6 |
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In algebraic addition, 4-3+2 means (+4)+(__)+(+2).
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-3
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Another name for the opposite of a number is the _________ ___________ of the number.
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additive inverse
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To add two signed numbers that have the SAME sign, we add the absolute values of the numbers and _______ the sign.
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copy
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a-b=a+(__)
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-b
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To add two signed numbers that have DIFFERENT signs, we subtract the absolute values of the numbers and think " the ________ army wins."
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biggest
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