HP 33s - Manual (Page 88)

5–6 Fractions
To select a fraction format, you must change the states of two flags. Each flag can
be "set" or "clear," and in one case the state of flag 9 doesn't matter.
Change These Flags: To Get This Fraction Format:
8 9
Most precise Clear —
Factors of denominator Set Clear
Fixed denominator Set Set
You can change flags 8 and 9 to set the fraction format using the steps listed here.
(Because flags are especially useful in programs, their use is covered in detail in
chapter 13.)
1. Press | y to get the flag menu.
2. To set a flag, press { } and type the flag number, such as 8.
To clear a flag, press {) and type the flag number.
To see if a flag is set, press { @} and type the flag number. Press
‡ or b
to clear the & or  response.
Examples of Fraction Displays
The following table shows how the number 2.77 is displayed in the three fraction
formats for two /c values.
How 2.77 Is Displayed Fraction
Format
/c = 4095 /c = 16
Most Precise 2 77/100 (2.7700) 2 10/13S (2.7692)
Factors of
Denominator
2 1051/1365S (2.7699) 2 3/4S (2.7500)
Fixed Denominator 2 3153/4095S (2.7699) 2 12/16S (2.7500)
The following table shows how different numbers are displayed in the three
fraction formats for a /c value of 16.