Math Notes
| Description: | 1.4 Adding & Subtracting Integers |
| Category: | Math |
| Created by: |
Connor Hatch
on 2009-09-23
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| Question | Answer |
| Define: opposites | two numbers that are the same distance from zero (0) on a number line, but one is positive and one is negativeexample: (-2) and (2) are opposites |
| Define: integers | whole numbers and their opposites [positive & negative numbers]example: (-5) and (16) are integers |
| Define: absolute value | the distance an integer is from zero (0) on a number line [i.e. always positive]example: the (-5) = (5) |
| Addition Rules: same sign examples | 3+5=8 (-3)+(-5)=(-8) |
| Addition Rules: different sign examples | (-3)+5=2 3+(-5)=(-2) |
| Subtraction Rules: ?? | DON'T SUBTRACT! ADD THE OPPOSITE!example: 3-5 is really 3+(-5) |
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