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Basic Calculations Chapter 2
8. Fraction Calculations
(1) Fraction Display and Input
Example 1 Display of ––
4
Example 2 Display of 3
Mixed fractions (such as 3 1/4) are input and displayed as: integer { numerator { denominator.
Improper fractions (15/7) and proper fractions (such as 1/4) are input and displayed as: numerator { denominator.
Use the $ key to input each part of a fraction.
u
To input a fraction
Operation
Proper Fraction or Improper Fraction Input: <numerator value> $ <denominator value>
Mixed Fraction Input: <integer value> $ <numerator value> $ <denominator value>
Example To input 3 ––
4
Press d $ b $ e .
Note that the maximum size of a fractional value is 10 digits, counting the integer, numerator, and denominator digits and separator symbols. Any value longer than
10 digits is automatically converted to its equivalent decimal value.
(2) Performing Fraction Calculations
Example
2
5
+ 3
1
4
A c $ f+d $ b $ e w u
To convert between fraction and decimal values
Operation
Fraction to Decimal Conversion: M
Decimal to Fraction Conversion: M
23
24
Chapter 2 Basic Calculations
Example
M
To convert the result of the previous example to a decimal and then back to a fraction
M u
To convert between proper and improper fractions
Operation
Mixed Fraction to Improper Fraction Conversion: !/
Improper Fraction to Mixed Fraction Conversion: !/
Example To convert the result of the previous example to an improper fraction and then back to a proper fraction
!/
!/
• The calculator automatically reduces the results of fraction calculations. You can use the procedure described under “Changing the Fraction Simplification Mode” below to specify manual fraction simplification.
u
To perform a mixed decimal and fraction calculation
Example 5.2
×
A f.c*b $ f w
• The result of a calculation that mixes fractions and decimal values is always a decimal value.
u
To use parentheses in a fraction calculation
Example
1
+
2
1
3
+
1
4
7
A b $ (b $ d+b $ e)
+c $ h w
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