HP 33s Scientific manual Keys Display Description, 22Getting Started

2.Key in the fraction numerator and press  again. The second  separates the numerator from the denominator.

3.Key in the denominator, then press ‘or a function key to terminate digit entry. The number or result is formatted according to the current display format.

The a b/c symbol under the key is a reminder that the key is used twice for fraction entry.

For example, to enter the fractional number 12 3/8, press these keys:

Keys:	Display:	Description:
12	_	Enters the integer part of the number.
	)_	The key is interpreted in the normal
		manner.
3	)_	Enters the numerator of the fraction (the
		number is still displayed in decimal
		form).
	+_	The calculator interprets the second 
		as a fraction and separates the
		numerator from denominator.
8	+_	Appends the denominator of the
		fraction.

‘)  Terminates digit entry; displays the number in the current display format.

If the number you enter has no integer part (for example, 3/8), just start the number without an integer:

Keys:Display:Description:

3 8 +_

‘) 

Enters no integer part. (3 8 also works.)

Terminates digit entry; displays the number in the current display format (FIX 4).

1–22Getting Started