Integer Addition
 

 

   Integer Addition:

If the signs are the same, ADD and use the sign of the original integers.

If the signs are different, SUBTRACT and use the sign of the term with the larger absolute value.

The following are examples of adding integers.

Adding Integers
  If the signs are the same, ADD the numbers together and use the sign of the original numbers If the signs are different, SUBTRACT the numbers, and use the sign of the number with the larger absolute value.
 
 
    
2 + 4 6 since originals were positive  
-3 + (-6) -9 since originals were negative  
     
12 + (-16)   -4 since 16 is biggest
9 + (-5)   4 since 9 is biggest
-7 + 4   -3 since 7 is biggest
-3 + 5   2 since 5 is biggest

 

Check Your Understanding

Experiment with adding integers ....

  1. Enter two numbers between -1000 and 1000.
  2. Think of what you believe the answer should be.
  3. Click the button "Check" and check your answer.
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