1.
•
this User’s Guide are for illustrative purposes only, and may differ
somewhat from the actual items they represent.
•
for special, collateral, incidental, or consequential damages in
connection with or arising out of the purchase or use of this product
and items that come with it. Moreover, CASIO Computer Co., Ltd.
shall not be liable for any claim of any kind whatsoever by any other
party arising out of the use of this product and the items that come
with it.
2.
Sample operations in this manual are indicated by a icon. Unless
specifically stated, all sample operations assume that the calculator is
in its initial default setup. Use the procedure under “3. Initializing the
Calculator” to return the calculator to its initial default setup.
3.
Perform the following procedure when you want to initialize the
calculator and return the calculation mode and setup to their initial
default settings. Note that this operation also clears all data currently
in calculator memory.
fx-82MS/85MS/300MS/350MS: p!, (CLR)3 (All)=
fx-82SX PLUS/220 PLUS: pr3 (All)=
4.
Battery
manual.
• Dim figures on the displa
power is low
is low can result in improper operation.
as soon as possible when display figures becomes dim.
if the calculator is operating normally
least once every two year
three years (fx-85MS/300MS/350MS).
causing damage to and malfunction of the calculator
leave a dead battery in the calculator
• The battery that comes with the calculator dischar
during shipment and storage. Because of this,
replacement sooner than the normal expected battery life.
• Do not use an o
primary battery with this product. Incompatibility between
such batteries and product specifications can result in shorter
battery life and product malfunction.
• A
to temperature extremes,
dust.
• Do not subject the calculator to e
or bending.
RJA521989-001V01 SA0912-A Printed in China
f
f
f
f
f
f
User’
CASIO Worldwide Education Website
http://edu.casio.com
CASIO EDUCATIONAL FORUM
http://edu.casio.com/forum/
E • Never try to take the calculator apart.
• Use a soft,
• Whene
do so in accordance with the laws and regulations in y
particular area.
*
trademarks or trademarks of their respective owners.
Before using the calculator, slide
its hard case downwards to
remove it, and then affix the hard
case to the back of the calculator
as shown in the illustration
nearby.
O to turn on the calculator.
1A(OFF) to turn off the calculator.
Your calculator will turn off automatically if you do not perform any
operation for about 10 minutes.
1. Press the , key a number of times until
you reach the setup screen shown to the
right.
2. Press c.
3. Use d and e to adjust contrast.
A.
If adjusting display contrast does not improve display
readability, it probably means that battery power is low. Replace
the battery.
The display of the calculator shows expressions you input, calculation
results, and various indicators.
operation:
operation:
N1(COMP)
N2(SD)
300MS/350MS only)
N3(REG)
Note: • The initial default calculation mode is the COMP Mode.
• Mode indicators appear in the upper part of the display. Be sure to
check the current calculation mode (COMP, SD, REG) and angle unit
setting (Deg, Rad, Gra) before beginning a calculation.
Pressing the , key more than once displays additional setup
screens. Underlined (
1Deg 2Rad 3Gra Specifies degrees,
radians or grads as the angle unit for value
input and calculation result display.
Note: In this manual, the v symbol next to a sample operation
indicates degrees.
1Fix 2Sci 3Norm Specifies the
number of digits for display of a calculation
result.
The value you specify (from 0 to 9) controls the number of decimal
places for displayed calculation results. Calculation results are
rounded off to the specified digit before being displayed.
The value you specify (from 1 to 10) controls the number of
significant digits for displayed calculation results. Calculation results
are rounded off to the specified digit before being displayed.
× 10
–1
(Sci 5)
Selecting one of the two available settings ( Norm 1 , Norm
2) determines the range in which results will be displayed in non-
exponential format. Outside the specified range, results are displayed
using exponential format.
–2
Ͼ | x |, | x | м 10
10
Norm 2: 10
–9
Ͼ | x |, | x | м 10
10
× 10
–3
(Norm 1); 0.005 (Norm 2)
b
e
d
1ab/c 2 d/c Specifies either mixed fraction (ab/c) or improper
fraction (d/c) for display of fractions in calculation results.
1Dot 2 Comma Spec
co
displayed
Initializing Calculator Settings
Perform the following procedure to initialize the calculator, which
returns the calculation mode to COMP and returns all other settings,
including setup menu settings, to their initial defaults.
p1, (CLR)c (Mode)=
fx-82SX PLUS/220 PLUS: pr c (Mode)=
4 × sin30 × (30 + 10 × 3) = 120 v
4 *s 30 *( 30 + 10 * 3 )=
• The memory area used for calculation input can hold 79
“steps”. One step is taken up each time you press a number key
or arithmetic operator key ( +, -, *, /). A ! or a (fx-
82MS/85MS/300MS/350MS only) key operation does not take up a
step, so inputting !W(
3
'), for example, takes up only one step.
• Whenever you input the 73rd step of any calculation, the cursor
changes from “_” to “ k” to let you know memory is running low.
When the priority of two expressions is the same, the calculation is
performed from left to right.
x , y ), Rec( r , Ƨ ),
RanInt#(
a , b )* (*fx-82SX PLUS/220 PLUS only)
entered and then the function key is pressed. (
x
3
, x
2
, x
−1
,
x !, ° ’ ”, m, m
1
, m
2
, n, °,
r
,
g
)
x
y
),
x
'
4th Fractions
π ,
e (natural logarithm base),
memory name, or variable name: 2 π , 3
e , 5A, π A, etc.
pressed and then the value is entered. ( ',
3
', log, ln,
e
x
, 10
x
, sin, cos, tan, sin
−1
, cos
−1
, tan
−1
, sinh, cosh, tanh,
sinh
−1
, cosh
−1
, tanh
−1
, (−))
'3, Alog2, etc.
8th Permutation ( n P r ), combination ( n C r )
× , ÷)
10th Addition, subtraction (+, –)
→ ddD → 12
→ d!D(INS) e → 1243
t”.
Press A.
2
+
1
=
1
3
1
2 $ + $ = 1 {1 {6.
1
=
1
2 2
4 − 3
4 - 3 $ 1 $ 2 = 1 {2.
• Mixing fractions and decimal values in a calculation will cause
the result to be displayed as a decimal value. • Fractions in calculation
results are displayed after being reduced to their lowest terms.
T
mixed fraction format: 1$(
T
format: $.
150 × 20% = 30 150 * 20 1=(%) 30.
Calculate what percentage of 880 is 660. (75%)
/ 880 1=(%)
75.
Increase 2500 by 15%. (2875)
2500 * 15 1=(%) +
2875.
Discount 3500 by 25%. (2625)
3500 * 25 1=(%) -
2625.
If 300 grams are added to a test sample originally weighing
500 grams, what is the percentage increase in weight?
(160%)
300 +500 !=(%)
160.
What is the percentage change when a value is increased
from 40 to 46? (15%)
46 -40 !=(%)
15.
Calculations
$ {minutes} $ {seconds} $.
k
k
k
k
k
k
Note: You must always input something for the degrees and minutes,
even if they are zero.
2°20´30˝ + 39´30˝ = 3°00´00˝
2 $ 20 $ 30 $+ 0 $ 39 $ 30 $=
3°0°0.
Convert 2°15´18˝ to its decimal equivalent.
2 $ 15 $ 18 $=
2°15°18.
(Converts sexagesimal to decimal.) $ 2.255
(Converts decimal to sexagesimal.) !$ (← ) 2°15°18.
Multi-Statements
(fx-82MS/85MS/300MS/350MS only)
You can use the colon character (:) to connect two or more
expressions and execute them in sequence from left to right when
you press =.
3 + 3 : 3 × 3 3 + 3 Sr(:) 3 * 3 = 6. Disp
= 9.
Using Engineering Notation
notation.
Transform the value 1234 to engineering notation, shifting the
decimal point to the right.
1234 =
1234.
W 1.234×10
3
W 1234.×10
0
Calculation History (Not included on the fx-82SX PLUS)
In the COMP Mode, the calculator remembers up to approximately
150 bytes of data for the newest calculation. You can scroll through
calculation history contents using f and c.
1 + 1 = 2 1 + 1 = 2.
2 + 2 = 4 2 + 2 = 4.
3 + 3 = 6 3 + 3 = 6.
(Scrolls back.) f 4.
(Scrolls back again.) f 2.
Note: Calculation history data is all cleared whenever you press O,
when you change to a different calculation mode, or whenever you
initialize modes and settings.
(Not included on the fx-82SX PLUS)
d or e
to edit the expression you used for the previous calculation.
4 × 3 4 * 3 + 2.5 = 14.5
4 × 3
(Continuing) dYYYY- 7.1 = 4.9
The last calculation result obtained is stored in Ans (answer) memory.
Ans memory contents are updated whenever a new calculation
result is displayed.
To divide the result of 3 × 4 by 30
3 * 4 = 12.
(Continuing) / 30 =
123 + 456 = 123 + 456 = 579.
789 – (Continuing) 789 -G= 210.
(fx-82MS/85MS/300MS/350MS only)
Your calculator has eight preset variables named A, B, C, D, E, F,
X, and Y.
To assign the result of 3 + 5 to variable A
3 + 5 1t(STO) y(A)
8.
To multiply the contents of variable A by 10
(Continuing) Sy(A) * 10 = 80.
To recall the contents of variable A
(Continuing) ty(A)
8.
To clear the contents of variable A
0 1t(STO) y(A) 0.
You can add calculation results to or subtract results from independent
memory. The “M” appears on the display when there is any value
other than zero stored in independent memory.
To clear the contents of M
0 1t(STO)l (M)
0.
fx-82SX PLUS/220 PLUS: 0 1n(Min) 0.
k
k
k
k
k
k
k
To add the result of 10 × 5 to M
(Continuing) * 5 l
50.
To subtract the result of 10 + 5 from M
(Continuing) + 5 1l(M–)
15.
To recall the contents of M
fx-82MS/85MS/300MS/350MS:
(Continuing) tl(M)
35.
(Continuing) n 35.
Variable M is used for independent memory.
press A, change the calculation mode, or turn off the calculator.
Perform the following procedure when you want to clear the contents
of all memories.
p!, (CLR)1 (Mcl)=
fx-82SX PLUS/220 PLUS: pr1 (Mcl)=
: π is displayed as 3.141592654, but π = 3.14159265358980 is
used for internal calculations.
e (fx-82MS/85MS/300MS/350MS only) : e is displayed as
2.718281828, but
e = 2.71828182845904 is used for internal
calculations.
sin, cos,
−1
, cos
−1
, tan
−1
: Trigonometric functions. Specify
the angle unit before performing calculations. See
1
.
−1
, cosh
−1
, tanh
−1
: Hyperbolic functions. The
angle unit setting does not affect calculations. See
2
.
°,
r
,
g
: These functions specify the angle unit. ° specifies degrees,
r
radians, and
g
grads. Input a function from the menu that appears
when you perform the following key operation: 1G(DRG ').
See
3
.
x
, e
x
: Exponential functions. See
4
.
: Logarithmic function. See
5
.
: Natural logarithm to base e . See
6
.
x
2
, x
3
, ^( x
y
),
'
,
3
'
,
x
'
, x
−1
: Powers, power roots, and
reciprocals. See
7
.
Pol, : Pol converts rectangular coordinates to polar coordinates,
while Rec converts polar coordinates to rectangular coordinates.
See
8
.
x , y ) = ( r , Ƨ ) Rec( r , Ƨ ) = ( x , y )
Polar
Coordinates (Rec) Coordinates (Pol)
k
before performing
calculations.
θ
is
displayed in the range
of −180° Ͻ
θ
Ϲ 180°.
x ! : Factorial function. See
9
.
: Generates a 3-digit pseudo random number that is less than
1. See
10
.
(fx-82SX PLUS/220 PLUS only) : For input of the function
of the form RanInt#(
a , b ), which generates a random integer within
the range of
a to b . See
11
.
n P r , n C r : Permutation ( n P r ) and combination ( n C r ) functions. See
12
.
: The argument of this function is made a decimal value and
then rounded in accordance with the current number of display digits
setting (Norm, Fix, or Sci). With Norm 1 or Norm 2, the argument is
rounded off to 10 digits. See
13
.
Using functions can slow down a calculation, which may delay
display of the result. To interrupt an ongoing calculation before its
result appears, press A.
sin 30°= 0.5 v s 30 = 0.5
−1
0.5 = 30° v 1s(sin
−1
) 0.5 = 30.
ws(sinh) 1 = 1.175201194
–1
1 = 0 w1c(cosh
−1
) 1 = 0.
π /2 radians = 90°, 50 grads = 45° v
(1E(π )/ 2 ) 1G(DRG' )c (R)= 90.
50 1G(DRG ') d(G) = 45.
To calculate e
5
× 2 to three significant digits (Sci 3)
N 2(Sci) 3 1i( e
x
) 5 * 2 = 2.97×10
2
log 1000 = 3 l 1000 = 3.
To calculate ln 90 (= log
e
90) to three significant digits (Sci 3)
N 2(Sci) 3 i 90 = 4.50×10
0
× 10
3
= 1200 1.2 * 10 M 3 = 1200.
2
)
3
= 15625 ( 5 x)W = 15625.
k
1
2
3
4
5
6
7
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