HP 300s Scientific Calculator - Manual (Page 48)

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The following performs the same calculation with rounding.
     
(Round the value to the specified number of digits.)
  (Rnd) 
(Check rounded result.)
   
Transforming Displayed Values
You can use procedures in this section to transform a
displayed value to engineering notation, or to transform
between standard form and decimal form.
Using Engineering Notation
A simple key operation transforms a displayed value to
engineering notation. Transform the value 1,234 to
engineering notation, shifting the decimal point to the right.

    


Transform the value 123 into engineering notation, shifting the
decimal point to the left.

   