Casio fx-991EX User Manual

fx-991EX Quick Start Guide 3
Below are some examples of the Natural Textbook Display™ input/output notation, as found by selecting the Calculate
icon from the Main Menu of the fx-991EX.
From the Main Menu, use the arrow keys to
highlight the Calculate icon, then press =
or press 1.
Fractions and mixed numbers can be entered using
a and qaA, respectively.
To enter the calculation to the left, press
a7$8$+qaA2$3$
11p.
To change the solution to a decimal format,
press n.
Press qnN to convert the result into
a mixed-number format.
When inputting radical expressions, the radical bar
automatically extends as additional characters are typed.
Press s24=.
The output will be displayed in simplest radical form, but can
be converted into a decimal approximation by pressing n.
CALCULATE

Casio fx-991EX Specifications

General

Type	Scientific
Cover	No
Form factor	Pocket
Control type	Buttons
Product color	Black, White
Battery type	LR44
Power source	Battery/Solar
Number of batteries supported	1
Digits	16 digits
Display type	LCD
Display resolution	192 x 63 pixels
Display number of lines	2 lines
Display number of characters	16
Storage media type	-
Operation	552
Conversion between	Decimal, Fraction, Percent
Convert angles from degrees to	Gradian, Radian
Random number/integer generator	Yes

Weight and Dimensions

Depth	165.5 mm
Width	77 mm
Height	11.1 mm
Weight	90 g