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    Opposites on Your Computer's Calculator


Your Computer's Calculator  
  
 
    NOTES:
  • No points have been marked on this page for BREAKs. Decide for yourself when to break.
  • Keep both notes open and your calculator open.


The Opposite of A Number  
  
 

    Please use your computer's calculator to as we examine the opposite of a number.

 

Example #1: Writing the Opposite of Five

  • Type 5 on the calculator screen.
  • Press [+/-], the opposite key to write the opposite of five.
  • The result is -5, negative five, the opposite of five.
 

 

Example #2: Writing the Opposite of Negative Five

  • Type -5 on the calculator screen by:
    -- Typing 5 then
    -- Pressing [+/-] to write -5.
  • Press [+/-], the opposite key to write the opposite of this.
  • The result is 5, five, positive five, the opposite of negative five.
 

 

Example #3: Simplify: -(-(-(-(-(-2)))))

  • Do innermost first, according to order of operations.
  • Type 2.
  • Press [+/-] to change this to -2.
  • Press [+/-] 5 more times, once for each negative sign.
  • The result is 2.

OR

  • Type 2.
  • Press [+/-] 6 times, once for each negative sign.
  • The result is 2.
 




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