Casio fx-991EX User Manual

fx-991EX Quick Start Guide8
To find the difference between one US Gallon and one UK
Gallon, first, convert to a common unit, like a liter (L).
Press 1q8(CONV)3(Volume)
1(gal(US) : L)p.
One US gallon is approximately 3.785 L.
Now, convert the solution to gallons UK.
Press q8(CONV)3(Volume)4
(L : gal(UK))p.
It looks like a US gallon is smaller.
1 US gallon = 0.8326742321 UK gallons.
The same calculation can be accomplished using a
string of conversions.
Press 1q8(CONV)3(Volume)
1(gal(US) : L)q8(CONV)
3(Volume)4(L: gal(UK))p.
Start with a large number like 2.5 X 10
9
.
Press 2.5K9p.
The gap between digits at place value separation can be viewed
by entering Set Up. Press qp(SET UP) and use the arrow
keys to navigate to the third menu.
ENGINEERING NOTATION
Converting large numbers into scientic and engineering notations
can be accomplished through a short series of keystrokes.
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