Alg. I Lesson 6
Terms
undefined, object
copy deck
- 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