HP 300s Scientific Calculator - Manual (Page 26)

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Example: (2 + 3) ✕ (4 - 1) = 15

     
    
Fraction Calculations
How you should input fractions depends on the input/output
format that is currently selected.
• Default settings display fractions as improper fractions.
• Fraction calculation results are always reduced before
being displayed.
Example:

     
    

    
  
(Fraction format a b/c)

     
     
• Mixed fraction input is possible only when “a b/c” is
specified for the fraction format.
• In MATH mode, press   (  ) to input mixed fractions.
• If the total number of digits used for a mixed fraction
(including integer, numerator, denominator, and separator
symbols) is greater than 10, the value is automatically
displayed in decimal format.
• The result of a calculation that involves both fraction and
decimal values is displayed in decimal format.
2
3
--- 1
2
--- +
7
6
--- =
3
1
4
--- 12
3
--- + 4
11
12
------ =