3
@12 Adding Integers
%2
^1
The set of integers is made up of
positive and negative whole numbers, 
including zero.  
^2
When numbers have the same signs, add 
the numbers and use that sign.
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%4
^1 
When the signs are mixed, the absolute 
value of the numbers is used to solve
the problem.  The absolute value of a 
number is the distance between the 
number and 0 on a number line.  
The absolute value of 3 is 3.  
The absolute value of -3 is also 3.
^2
If the signs are mixed, first add 
together the numbers with the same 
signs.  
^3
Then, subtract the smaller absolute 
value from the larger.  
Remember to disregard the signs. 
^4
The final answer takes the sign of
the number with the larger 
absolute value. 
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@22 Subtracting Integers
%3
^1
Subtraction is the same as adding the 
inverse (opposite) of the second 
number.
^2
To add the inverse, rewrite the problem 
as addition and change the sign of the 
second number.
^3
Add the numbers.  
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%4
^1
Subtraction is the same as adding the 
inverse (opposite) of the second 
number.
^2 
To add the inverse, rewrite the problem 
as addition and change the sign of the 
second number.  
^3
Then subtract the smaller absolute 
value from the larger.  
Remember to disregard the signs. 
^4
The final answer takes the sign of the 
larger number. 
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@32 Multiplying and Dividing Integers
%2
^1
If there are an even number of negative 
terms (or if there are none), the 
answer is positive.
^2
Determine the sign and multiply or 
divide as indicated.
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%2
^1
If there are an odd number of negative 
terms, the answer is negative.
^2
Determine the sign and multiply or 
divide as indicated.
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