E
fx-82ES
fx-83ES
fx-85ES
fx-300ES
fx-350ES
User's Guide
RCA502136-001V01
A
About this Manual
• The MATH mark indicates an example that uses Math format,
while the LINE mark indicates Linear format. For details about
input/output formats, see “Specifying the Input/Output Format”.
• Keycap markings indicate what a key inputs or what function it
performs.
Example: 1, 2, +, -, !, A, etc.
• Pressing the 1 or S key followed by a second key performs
the alternate function of the second key. The alternate function is
indicated by the text printed above the key.
Alternate function
sin–1
D
Keycap function
s
• The following shows what the different colors of the alternate
function key text mean.
If key marking
text is this color:
It means this:
Press 1 and then the key to access
the applicable function.
Yellow
Press S and then the key to input the
applicable variable, constant, or symbol.
Red
• The following shows an example of how an alternate function
operation is represented in this User’s Guide.
–1
Example: 1s(sin )1=
Indicates the function that is accessed by the key
operation (1s) before it. Note that this is not part
of the actual key operation you perform.
• The following shows an example of how a key operation to select
an on-screen menu item is represented in this User’s Guide.
Example: 1(Setup)
Indicates the menu item that is selected by the number
key operation (1) before it. Note that this is not part
of the actual key operation you perform.
E-1
The cursor key is marked with four arrows,
indicating direction, as shown in the
illustration nearby.In this User’s Guide, cursor
key operation is indicated as f, c, d,
and e.
REPLAY
• The displays and illustrations (such as key markings) shown in
this User’s Guide and the separate Appendix are for illustrative
purposes only, and may differ somewhat from the actual items
they represent.
• The contents of this manual are subject to change without notice.
• In no event shall CASIO Computer Co., Ltd. be liable to anyone 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.
k Using the Separate Appendix
Whenever you see the symbol Appendix in this manual, it
means you should refer to the separate Appendix.
Example numbers (like “<#021>”) in this User’s Guide refer to the
corresponding example number in the Appendix.
Specify the angle unit in accordance with the marks in the Appendix:
Deg : Specify Degree for the angle unit.
Rad : Specify Radian for the angle unit.
Initializing the Calculator
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.
19(CLR)3(All)=(Yes)
• For information about calculation modes and setup settings, see
“Calculation Modes and Calculator Setup”.
• For information about memory, see “Using Calculator Memory”.
E-2
Safety Precautions
Be sure to read the following safety precautions before using this
calculator. Keep this manual handy for later reference.
Caution
This symbol is used to indicate information that can result in
personal injury or material damage if ignored.
Battery
• After removing the battery from the calculator, put it in a safe
place where it will not get into the hands of small children and
accidentally swallowed.
• Keep batteries out of the reach of small children.If accidentally
swallowed, consult with a physician immediately.
• Never charge the battery, try to take the battery apart, or allow
the battery to become shorted. Never expose the battery to
direct heat or dispose of it by incineration.
• Improperly using a battery can cause it to leak and damage
nearby items, and can create the risk of fire and personal injury.
• Always make sure that the battery’s positive
and negative
k
ends are facing correctly when you load it into the
l
calculator.
• Remove the battery if you do not plan to use the calculator
for a long time (fx-82ES/fx-83ES/fx-350ES).
• Use only the type of battery specified for this calculator in
this manual.
Disposing of the Calculator
• Never dispose of the calculator by burning it. Doing so can
cause certain components to suddenly burst, creating the risk
of fire and personal injury.
E-3
Handling Precautions
• Be sure to press the O key before using the calculator for
the first time.
• Even if the calculator is operating normally, replace the battery
at least once every three years (LR44 (GPA76)), two years (R03
(UM-4)), or one year (LR03 (AM4)).
A dead battery can leak, causing damage to and malfunction of
the calculator. Never leave a dead battery in the calculator.
• The battery that comes with this unit discharges slightly during
shipment and storage. Because of this, it may require
replacement sooner than the normal expected battery life.
• Low battery power can cause memory contents to become
corrupted or lost completely. Always keep written records of
all important data.
• Avoid use and storage of the calculator in areas subjected to
temperature extremes.
Very low temperatures can cause slow display response, total
failure of the display, and shortening of battery life. Also avoid
leaving the calculator in direct sunlight, near a window, near a heater
or anywhere else it might be exposed to very high temperatures.
Heat can cause discoloration or deformation of the calculator’s
case, and damage to internal circuitry.
• Avoid use and storage of the calculator in areas subjected to
large amounts of humidity and dust.
Take care never to leave the calculator where it might be splashed
by water or exposed to large amounts of humidity or dust. Such
conditions can damage internal circuitry.
• Never drop the calculator or otherwise subject it to strong
impact.
• Never twist or bend the calculator.
Avoid carrying the calculator in the pocket of your trousers or other
tight-fitting clothing where it might be subjected to twisting or
bending.
• Never try to take the calculator apart.
• Never press the keys of the calculator with a ballpoint pen or
other pointed object.
• Use a soft, dry cloth to clean the exterior of the calculator.
If the calculator becomes very dirty, wipe it off with a cloth moistened
in a weak solution of water and a mild neutral household detergent.
Wring out all excess liquid before wiping the calculator. Never use
thinner, benzene or other volatile agents to clean the calculator.
Doing so can remove printed markings and can damage the case.
E-4
Before Using the Calculator
k Removing the Hard Case
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 below.
k Turning Power On and Off
• Press O to turn on the calculator.
• Press 1A(OFF) to turn off the calculator.
k Adjusting Display Contrast
1N(SETUP)c5(]CONT')
This displays the contrast adjustment screen. Use d and e to
adjust display contrast. After the setting is the way you want, press
A.
• You can also adjust contrast using d and e while the mode
menu (which appears when you press N) is on the display.
Important!
• If adjusting display contrast does not improve display readability, it
probably means that battery power is low. Replace the battery.
E-5
k About the Display
Your calculator has a 31-dot × 96-dot LCD screen.
Example:
Input expression
Calculation result
{
k Display Indicators
Sample Display:
STAT
This
Means this:
indicator:
The keypad has been shifted by pressing the 1
key. The keypad will unshift and this indicator will
disappear when you press a key.
S
A
The alpha input mode has been entered by pressing
the S key. The alpha input mode will be exited
and this indicator will disappear when you press a
key.
M
There is a value stored in independent memory.
The calculator is standing by for input of a variable
name to assign a value to the variable.This indicator
appears after you press 1t(STO).
STO
The calculator is standing by for input of a variable
name to recall the variable’s value. This indicator
appears after you press t.
RCL
STAT
7
The calculator is in the STAT Mode.
The default angle unit is degrees.
8
The default angle unit is radians.
9
The default angle unit is grads.
FIX
SCI
Math
A fixed number of decimal places is in effect.
A fixed number of significant digits is in effect.
Math style is selected as the input/output format.
Calculation history memory data is available and can
be replayed, or there is more data above/below the
current screen.
$`
The display currently shows an intermediate result
of a multi-statement calculation.
Disp
E-6
Important!
• For a very complex calculation or some other type of calculation
that takes a long time to execute, the display may show only the
above indicators (without any value) while it performs the calculation
internally.
Calculation Modes and
Calculator Setup
k Calculation Modes
When you want to perform this type of
operation:
Select this
mode:
General calculations
COMP
STAT
Statistical and regression calculations
Generation of a number table based on an
expression
TABLE
Specifying the Calculation Mode
(1) Press N to display the mode
menu.
(2) Press the number key that corresponds to the mode you want to
select.
• To select the STAT Mode, for example, press 2.
k Configuring the Calculator Setup
Pressing 1N(SETUP) displays the setup menu, which you can
use to control how the calculations are executed and displayed.The
setup menu has two screens, which you can jump between using
c and f.
c
f
• See “Adjusting Display Contrast” for information about how to use
“]CONT'”.
Specifying the Input/Output Format
For this input/output format: Perform this key operation:
Math
1N1(MthIO)
Linear
1N2(LineIO)
E-7
• Math format causes fractions, irrational numbers, and other
expressions to be displayed as they are written on paper.
• Linear format causes fractions and other expressions to be
displayed in a single line.
Math
Math Format
Linear Format
Specifying the Default Angle Unit
To specify this as the default
Perform this key operation:
angle unit:
Degrees
1N3(Deg)
1N4(Rad)
1N5(Gra)
Radians
Grads
π
2
90° =
radians = 100 grads
Specifying the Number of Display Digits
To specify this:
Perform this key operation:
Number of Decimal Places
Number of Significant Digits
1N6(Fix)0–9
1N7(Sci)0–9
1N8(Norm)1(Norm1)
or 2(Norm2)
Exponential Display Range
Calculation Result Display Examples
• Fix: 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.
Example: 100 ÷ 7 = 14.286 (Fix3)
14.29 (Fix2)
• Sci: 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.
–1
Example: 1 ÷ 7 = 1.4286 × 10 (Sci5)
–1
1.429 × 10 (Sci4)
• Norm: Selecting one of the two available settings (Norm1, Norm2)
determines the range in which results will be displayed in non-
exponential format. Outside the specified range, results are
displayed using exponential format.
–2
10
Norm1: 10 > x, x > 10
–9
10
Norm2: 10 > x, x > 10
–3
Example: 1 ÷ 200 = 5 × 10
(Norm1)
(Norm2)
E-8
0.005
Specifying the Fraction Display Format
To specify this fraction
Perform this key operation:
display format:
Mixed
1Nc1(ab/c)
Improper
1Nc2(d/c)
Specifying the Statistical Display Format
Use the following procedure to turn display of the frequency (FREQ)
column of the STAT Mode STAT editor screen on or off.
To specify this:
Perform this key operation:
1Nc3(STAT)1(ON)
1Nc3(STAT)2(OFF)
Show FREQ Column
Hide FREQ Column
Specifying the Decimal Point Display Format
To specify this decimal
Perform this key operation:
point display format:
Dot (.)
1Nc4(Disp)1(Dot)
Comma (,)
1Nc4(Disp)2(Comma)
• The setting you configure here is applied for calculation results
only. The decimal point for input values is always a dot (.).
k Initializing the Calculation Mode and Other
Settings
Performing the following procedure initializes the calculation mode
and other setup settings as shown below.
19(CLR)1(Setup)=(Yes)
This setting:
Is initialized to this:
Calculation Mode
Input/Output Format
Angle Unit
COMP
MthIO
Deg
Display Digits
Norm1
d/c
OFF
Fraction Display Format
Statistical Display
Decimal Point
Dot
• To cancel initialization without doing anything, press A(Cancel)
instead of =.
E-9
Inputting Expressions and
Values
k Inputting a Calculation Expression Using
Standard Format
Your calculator lets you input calculation expressions just as they
are written.Then simply press the = key to execute it.The calculator
automatically judges the calculation priority sequence for addition,
subtraction, multiplication, and division, functions, and parentheses.
Example: 2 (5 + 4) – 2 × (–3) =
LINE
2(5+4)-
2*y3=
Inputting a Function with Parenthesis
When you input any of the functions shown below, it is automatically
input with the open parenthesis (() character. Next, you need to
input the argument and the closing parenthesis ()).
–1
–1
–1
–1
sin(, cos(, tan(, sin (, cos (, tan (, sinh(, cosh(, tanh(, sinh (,
3
–1
–1
cosh (, tanh (, log(, ln(, e^(, 10^(, '(, '(, Abs(, Pol(, Rec(,
Rnd(
Example: sin 30 =
LINE
s30)=
Pressing s inputs “sin(”.
• Note that the input procedure is different if you want to use Math
format. For more information, see “Inputting with Math Format”.
Omitting the Multiplication Sign
You can omit the multiplication sign (×) in any of the following cases.
• Before an open parentheses ((): 2 × (5 + 4), etc.
• Before a function with parenthesis: 2 × sin(30), 2 × '(3), etc.
• Before a variable name, constant, or random number:
20 × A, 2 × π, etc.
Final Closed Parenthesis
You can omit one or more closed parentheses that come at the end
of a calculation, immediately before the = key is pressed. For
details, see “Omitting a Final Closed Parenthesis”.
E-10
Displaying a Long Expression
The display can show up to 14 characters at a time. Inputting the
15th character causes the expression to shift to the left.At this time,
the ] indicator appears to the left of the expression, indicating that
it runs off the left side of the screen.
Input expression: 1111 + 2222 + 3333 + 444
Math
Displayed portion:
Cursor
• When the ] indicator is displayed, you can scroll left and view the
hidden part by pressing the d key. This will cause the ' indicator
to appear to the right of the expression. At this time, you can use
the e key to scroll back.
Number of Input Characters (Bytes)
• You can input up to 99 bytes of data for a single expression.
Basically, each key operation uses up one byte. A function that
–1
requires two key operations to input (like 1s(sin )) also uses
only one byte.Note, however, that when you are inputting functions
with Math format, each item you input uses up more than one
byte. For more information, see “Inputting with Math Format”.
• Normally the input cursor appears as a straight vertical ( ) or
I
horizontal ( ) flashing line on the display screen.When there are
10 or fewer bytes of input remaining in the current expression, the
cursor changes shape to
appears, terminate the expression at a convenient point and
calculate the result.
to let you know. If the
cursor
I
I
k Correcting an Expression
This section explains how to correct an expression as you are
inputting it.The procedure you should use depends on whether you
have insert or overwrite selected as the input mode.
About the Insert and Overwrite Input Modes
With the insert mode, the displayed characters shift to the left to
make room when you input a new character.With the overwrite mode,
any new character you input replaces the character at the current
cursor position.The initial default input mode is insert.You can change
to the overwrite mode when you need it.
• The cursor is a vertical flashing line ( ) when the insert mode is
I
selected. The cursor is a horizontal flashing line ( ) when the
overwrite mode is selected.
• The initial default for Linear format input is the insert mode. You
can switch to the overwrite mode by pressing 1Y(INS).
E-11
• With Math format, you can only use the insert mode. Pressing
1Y(INS) when the Math format is selected does not switch to
the overwrite mode. See “Incorporating aValue into a Function” for
more information.
• The calculator automatically changes to the insert mode whenever
you change the input/output format from Linear to Math.
Changing the Character or FunctionYou Just Input
Example: To correct the expression 369 × 13 so it becomes
369 × 12
LINE
369*13
Y
2
Deleting a Character or Function
Example: To correct the expression 369 × × 12 so it becomes
369 × 12
LINE
Insert Mode: 369**12
dd
Y
Overwrite Mode:
369**12
ddd
Y
Correcting a Calculation
Example: To correct cos(60) so it becomes sin(60)
LINE
Insert Mode:
c60)
E-12
dddY
s
Overwrite Mode:
c60)
dddd
s
Inserting Input into a Calculation
Always use the insert mode for this operation. Use d or e to
move the cursor to the location where you want to insert new input,
and then input what you want.
k Displaying the Location of an Error
If an error message (like “Math ERROR” or “Syntax ERROR”)
appears when you press =, press d or e. This will display the
part of the calculation where the error occurred, with the cursor
positioned at the error location. You can then make necessary
corrections.
Example: When you input 14 ÷ 0 × 2 = by mistake instead of 14 ÷
10 × 2 =
Use the insert mode for the following operation.
LINE
14/0*2=
Press e or d.
This is causing the error.
d1
=
You can also exit the error screen by pressing A, which clears the
calculation.
E-13
k Inputting with Math Format
When inputting with Math format, you can input and display fractions
and some functions using the same format as they appear in your
textbook.
Important!
• Certain types of expressions can cause the height of a calculation
formula to be greater than one display line.The maximum allowable
height of a calculation formula is two display screens (31 dots × 2).
Further input will become impossible if the height of the calculation
you are inputting exceeds the allowable limit.
• Nesting of functions and parentheses is allowed. Further input will
become impossible if you nest too many functions and/or
parentheses. If this happens, divide the calculation into multiple
parts and calculate each part separately.
Functions and Symbols Supported for Math Format
Input
• The “Bytes” column shows the number of bytes of memory that
are used up by input.
Function/Symbol
Improper Fraction
Key Operation
Bytes
'
9
13
6
Mixed Fraction
log(a,b) (Logarithm)
10^x (Power of 10)
e^x (Power of e)
Square Root
Cube Root
1'(()
&
1l($)
1i(%)
!
4
4
4
1!(#)
w, W
E
9
Square, Cube
Reciprocal
4
5
Power
6
4
Power Root
16(")
D
9
Absolute Value
Parentheses
4
( or )
1
Math Format Input Examples
• The following operations are all performed while Math format is
selected.
• Pay close attention to the location and size of the cursor on the
display when you input using Math format.
3
Example 1: To input 2 + 1
Math
MATH
263
E-14
Math
e+1
'
Example 2: To input 1 + 2 + 3
Math
Math
MATH
1+!2
e+3
2
5
2
Example 3: To input (1 +
)
× 2 =
MATH
Math
(1+'2c5e)
w*2=
• When you press = and obtain a calculation result using Math
format, part of the expression you input can be cut off as shown in
the Example 3 screen shot. If you need to view the entire input
expression again, press A and then press e.
Incorporating a Value into a Function
When using Math format, you can incorporate part of an input
expression (a value, an expression within parentheses, etc.) into a
function.
Example: To incorporate the expression inside of the parentheses
of 1 + (2 + 3) + 4 into the ' function
MATH
Math
Move the cursor to here.
Math
1Y(INS)
This changes the shape of the cursor as shown here.
Math
!
This incorporates the expression in the
parentheses into the function '.
• If the cursor is located left of a particular value or fraction (instead
of an open parentheses), that value or fraction will be incorporated
into the function specified here.
• If the cursor is located left of function, the entire function is
incorporated into the function specified here.
E-15
The following examples show the other functions that can be used
in the above procedure, and the required key operations to use them.
Original Expression:
Function
Fraction
Key Operation
Resulting Expression
'
log(a,b)
&
Power Root
16(")
You can also incorporate values into the following functions.
1l($), 1i(%), !, 6, 1!(#), D
Displaying Calculation Results
in a Form that Includes '2, π,
etc. (Irrational Number Form)
When “MthIO”is selected for the input/output format, you can specify
whether calculation results should be displayed in a form that includes
expressions like '2 and π (irrational number form).
• Pressing = after inputting a calculation displays the result using
irrational number form.
• Pressing 1= after inputting a calculation displays the result
using decimal values.
Note
• When “LineIO” is selected for the input/output format, calculation
results are always displayed using decimal values (no irrational
number form) regardless of whether you press = or 1=.
• π form (form that includes π within irrational number display) display
conditions are the same as those for S-D conversion. For details,
see “Using S-D Transformation”.
Example 1: '2 +'8 = 3'2
Math
MATH
1
!2e+!8=
Math
2
!2e+!81=
E-16
'3
Example 2: sin (60) =
(Angle Unit: Deg)
2
Math
MATH
s60=
1
6
Example 3: sin–1 (0.5) =
π
(Angle Unit: Rad)
Math
MATH
1s(sin–1)0.5=
• The following are the calculations for which ' form (form that
includes ' within irrational number display) results can be
displayed.
a.Arithmetic calculations of values with square root symbol ('),
x2, x3, x–1
b. Trigonometric function calculations
The following are the input value ranges for which ' form is always
used for display of trigonometric calculation results.
Input Value Range
Angle Unit
Angle Value Input
for ' Form
Calculation Result
Setting
9
Deg
Units of 15°
ȊxȊ < 9 × 10
1
Rad
Multiples of
Multiples of
π radians
ȊxȊ < 20π
12
50
3
Gra
grads
ȊxȊ < 10000
Calculation results may be displayed in decimal form for input values
outside of the above ranges.
k ' Form Calculation Range
Results that include square root symbols can have up to two terms
(an integer term is also counted as a term).
' form calculation results use display formats like those shown
below.
a'b d'e
a'b,
d
a'b,
c
f
The following shows the range for each of the coefficients (a, b, c, d,
e, f).
1 < a < 100, 1 < b < 1000, 1 < c < 100
0 < d < 100, 0 < e < 1000, 1 < f < 100
E-17
Example:
2'3 × 4 = 8'3
' form
35'2 × 3 = 148.492424
decimal form
(= 105'2)
150'2
= 8.485281374
25
2 × (3 – 2'5 ) = 6 – 4'5
' form
23 × (5 – 2'3 ) = 35.32566285
decimal form
(= 115 – 46'3 )
10'2 + 15 × 3'3 = 45'3 + 10'2
' form
15 × (10'2 + 3'3 ) = 290.0743207
decimal form
(= 45'3 + 150'2 )
'2 + '3 + '8 = '3 + 3'2
' form
'2 + '3 + '6 = 5.595754113
decimal form
The underlined areas in the above examples indicate what caused
decimal form to be used.
Reasons why the results of the examples are displayed in
decimal form
- Value outside of the allowable range
- More than two terms in the calculation result
• Calculation results displayed in ' form are reduced to a common
denominator.
a'b d'e
a′'b + d′'e
+
→
c
f
c′
• c′ is the least common multiple of c and f.
• Since calculation results are reduced to a common denominator,
they are displayed in ' form even if coefficients (a′, c′, and d′)
are outside the corresponding ranges of coefficients (a, c, and d).
'3 '2 10'3 + 11'2
+
=
Example:
11
10
110
• The result is displayed in decimal form even when any intermediate
result has three or more terms.
Example: (1 + '2 + '3 )(1 – '2 – '3 )(= –4 – 2'6 )
= –8.898979486
• If a term is encountered during the calculation cannot be displayed
as a root (') form or a fraction, the calculation result is displayed
in decimal form.
Example: log3 + '2 = 1.891334817
E-18
Basic Calculations
(COMP)
This section explains how to perform arithmetic, fraction, percent,
and sexagesimal calculations.
All calculations in this section are performed in the COMP Mode
(N1).
k Arithmetic Calculations
Use the +, -, *, and / keys to perform arithmetic calculations.
Example: 7 × 8 – 4 × 5 = 36
LINE
7*8-4*5=
• The calculator automatically judges the calculation priority
sequence. For more information, see “Calculation Priority
Sequence”.
Number of Decimal Places and Number of
Significant Digits
You can specify a fixed number of decimal places and significant
digits for the calculation result.
Example: 1 ÷ 6 =
LINE
Initial default setting (Norm1)
FIX
3 decimal places (Fix3)
SCI
3 significant digits (Sci3)
• For more information, see “Specifying the Number of Display Digits”.
Omitting a Final Closed Parenthesis
You can omit any closed parenthesis ()) immediately preceding
operation of the = key at the end of a calculation.
This is true only in the case of Linear format.
E-19
Example: (2 + 3) × (4 – 1) = 15
LINE
(2+3)*
(4-1=
k Fraction Calculations
How you should input fractions depends on the input/output format
that is currently selected.
Improper Fraction
Mixed Fraction
1
2
7
3
Math
Format
3
('7c3)
(1'(()2e1c3)
7 { 3
2 { 1 { 3
Linear
Format
Numerator Denominator Integer Part
Denominator
Numerator
(7'3)
(2'1'3)
• Under initial default settings, fractions are displayed as improper
fractions.
• Fraction calculation results are always reduced before being
displayed.
Appendix
2
3
1
2
7
6
<#001> — + — = —
1
4
2
3
11
—
<#002> 3 — + 1 — = 4
(Fraction Display Format: ab/c)
12
1
1
2
4 – 3 — =
2
—
(Fraction Display Format: ab/c)
• If the total number of digits used for a mixed fraction (including
integer, numerator, denominator, and separator symbols) is greater
than 10, the value is automatically displayed in decimal format.
• The result of a calculation that involves both fraction and decimal
values is displayed in decimal format.
Switching between Improper Fraction and Mixed
Fraction Format
b
a—
c
d
—
c
⇔
Pressing the 1f(
between mixed fraction and improper fraction format.
) key toggles the display fraction
E-20
Switching between Fraction and Decimal Format
f
• The format of the fraction depends on the currently selected fraction
display format setting (improper fraction or mixed fraction).
• You cannot switch from decimal format to mixed fraction format if
the total number of digits used in the mixed fraction (including
integer, numerator, denominator, and separator symbols) is greater
than 10.
• For details about the f key, see “Using S-D Transformation”.
k Percent Calculations
Inputting a value and pressing 1((%) causes the input value to
become a percent.
Appendix
2
100
<#003> 2% = 0.02
——
(
)
20
100
<#004> 150 × 20% = 30
150 × ——
(
)
<#005> Calculate what percentage of 880 is 660.
(75%)
<#006> Increase 2500 by 15%.
<#007> Discount 3500 by 25%.
(2875)
(2625)
<#008> Discount the sum of 168, 98, and 734 by 20%.
(800)
<#009> If 300 grams are added to a test sample originally weighing
500 grams, what is the percentage increase in weight?
(160%)
<#010> What is the percentage change when a value is increased
from 40 to 46? How about to 48?
(15%, 20%)
k Degree, Minute, Second (Sexagesimal)
Calculations
You can perform calculations using sexagesimal values, and convert
values between sexagesimal and decimal.
Inputting Sexagesimal Values
The following is the syntax for inputting a sexagesimal value.
{Degrees}e{Minutes}e{Seconds}e
Appendix <#011> Input 2°0´30˝.
• Note that you must always input something for the degrees and
minutes, even if they are zero.
E-21
Sexagesimal Calculations
• Performing the following types of sexagesimal calculations
produces a sexagesimal result.
-
-
Addition or subtraction of two sexagesimal values
Multiplication or division of a sexagesimal value and a
decimal value
Appendix <#012> 2°20´30˝ + 39´30˝ = 3°00´00˝
Converting Values between Sexagesimal and
Decimal
Pressing e while a calculation result is displayed toggles the value
between sexagesimal and decimal.
Appendix <#013> Convert 2.255 to its sexagesimal equivalent.
Using Multi-statements in
Calculations
You can use the colon character (:) to connect two or more
expressions and execute them in sequence from left to right when
you press =.
Example: To create a multi-statement that performs the following
two calculations: 3 + 3 and 3 × 3
LINE
3+3SW(:)3*3
Disp
=
“Disp” indicates this is an intermediate result of a multi-statement.
=
E-22
Using Calculation History
Memory and Replay
(COMP)
Calculation history memory maintains a record of each calculation
expression you input and execute, and its result.
You can use calculation history memory in the COMP Mode
(N1) only.
Recalling Calculation History Memory Contents
Press f to back-step through calculation history memory contents.
Calculation history memory shows both calculation expressions and
results.
Example:
LINE
1+1=
2+2=
3+3=
f
f
• Note that calculation history memory contents are cleared
whenever you turn off the calculator, press the O key, change to
the calculation mode or the input/output format, or perform any
reset operation.
• Calculation history memory is limited. When the calculation you
are performing causes calculation history memory to become full,
the oldest calculation is deleted automatically to make room for
the new calculation.
Replay Function
While a calculation result is on the display, you can press A and
then d or e to edit the expression you used for the previous
calculation. If you are using Linear format, you can display the
expression by pressing d or e, without pressing A first.
Appendix <#014>
E-23
Using Calculator Memory
Memory Name
Description
Answer Memory Stores the last calculation result obtained.
Calculation results can be added to or subtracted
from independent memory. The “M” display
indicator indicates data in independent memory.
Independent
Memory
Six variables named A, B, C, D, X, and Y can
Variables
be used for storage of individual values.
This section uses the COMP Mode (N1) to demonstrate how
you can use memory.
k Answer Memory (Ans)
Answer Memory Overview
• Answer Memory contents are updated whenever you execute a
calculation using any one of the following keys: =, 1=, m,
1m(M–), t,1t(STO). Answer Memory can hold up to
15 digits.
• Answer Memory contents are not change if an error occurs during
the current calculation.
• Answer Memory contents are maintained even if you press the
A key, change the calculation mode, or turn off the calculator.
Using Answer Memory to Perform a Series of
Calculations
Example: To divide the result of 3 × 4 by 30
LINE
3*4=
(Continuing)/30=
Pressing / automatically inputs
“Ans” command.
• With the above procedure, you need to perform the second
calculation immediately after the first one. If you need to recall
Answer Memory contents after pressing A, press the G key.
E-24
Inputting Answer Memory Contents into an Expression
Example: To perform the calculations shown below:
123 + 456 = 579
789 – 579 = 210
LINE
123+456=
789-G=
k Independent Memory (M)
You can add calculation results to or subtract results from
independent memory. The “M” appears on the display when
independent memory contains a value.
Independent Memory Overview
• The following is a summary of the different operations you can
perform using independent memory.
To do this:
Perform this key operation:
Add the displayed value or
result of the expression to
independent memory
m
Subtract the displayed value
or result of the expression from 1m(M–)
independent memory
Recall current independent
tm(M)
memory contents
• You can also insert the M variable into a calculation, which tells
the calculator to use the current independent memory contents at
that location.The following is the key operation for inserting the M
variable.
Sm(M)
• The “M” indicator appears in the upper left of the display when
there is any value other than zero stored in independent memory.
• Independent memory contents are maintained even if you press
the A key, change the calculation mode, or turn off the calculator.
E-25
Calculation Examples Using Independent Memory
• If the “M” indicator is on the display, perform the procedure under
“Clearing Independent Memory” before performing this example.
Example: 23 + 9 = 32
53 – 6 = 47
23+9m
53-6m
–)45 × 2 = 90
99 ÷ 3 = 33
45*21m(M–)
99/3m
(Total) 22
tm(M)
Clearing Independent Memory
Press01t(STO)m. This clears independent memory and
causes the “M” indicator to disappear from the display.
k Variables (A, B, C, D, X,Y)
Variable Overview
• You can assign a specific value or a calculation result to a variable.
Example: To assign the result of 3 + 5 to variable A.
3+51t(STO)y(A)
• Use the following procedure when you want to check the contents
of a variable.
Example: To recall the contents of variable A
ty(A)
• The following shows how you can include variables inside of an
expression.
Example: To multiply the contents of variable A by the contents of
variable B
Sy(A)*Se(B)=
• Variable contents are maintained even if you press the A key,
change the calculation mode, or turn off the calculator.
Appendix <#015>
Clearing the Contents of a Specific Variable
Press 01t(STO) and then press the key for the name of the
variable whose contents you want to clear. To clear the contents of
variable A, for example, press 01t(STO)y(A).
k Clearing the Contents of All Memories
Use the following procedure to clear the contents of Answer Memory,
independent memory, and all of the variables.
Press 19(CLR)2(Memory)=(Yes).
• To cancel the clear operation without doing anything, press
A(Cancel) instead of =.
E-26
Function Calculations
This section explains how to use the calculator’s built-in functions.
The functions available to you depends on the calculation mode
you are in.The explanations in this section are mainly about the
functions that are available in all calculation modes. All of the
examples in this section show operation in the COMP Mode
(N1).
• Certain function calculations may take some time to display
calculation results.Before performing an operation, be sure to wait
until execution of the current operation is complete.You can interrupt
an ongoing operation by pressing A.
k Pi (π) and Natural Logarithm Base e
You can input pi (π) or natural logarithm base e into a calculation.
The following shows the required key operations and the values this
calculator uses for pi (π) and e.
π = 3.14159265358980 (15(π))
e = 2.71828182845904 (S5(e))
k Trigonometric and Inverse Trigonometric
Functions
• The angle unit required by trigonometric and inverse trigonometric
functions is one specified as the calculator’s default angle unit.
Before performing a calculation, be sure to specify the default angle
unit you want to use. See “Specifying the Default Angle Unit” for
more information.
–1
Appendix <#016> sin 30 = 0.5, sin 0.5 = 30
k Hyperbolic and Inverse Hyperbolic
Functions
Pressing the w key displays a menu of functions.Press the number
key that corresponds to the function you want to input.
–1
Appendix <#017> sinh 1 = 1.175201194, cosh 1 = 0
E-27
k Converting an Input Value to the
Calculator’s Default Angle Unit
After inputting a value, press 1G(DRG') to display the angle
unit specification menu shown below. Press the number key that
corresponds to the angle unit of the input value. The calculator will
automatically convert it to the calculator’s default angle unit.
Example: To convert the following values to degrees:
π
2
radians = 90°, 50 grads = 45°
The following procedure assumes that the calculator’s default angle
unit is degrees.
LINE
(15(π)/2)
r
1G(DRG')2( )=
501G(DRG')
g
3( )=
Appendix
<#018> cos (π radians) = –1, cos (100 grads) = 0
–1
<#019> cos (–1) = 180
–1
cos (–1) = π
k Exponential Functions and Logarithmic
Functions
• For the logarithmic function “log(”, you can specify base m using
the syntax “log (m, n)”.
If you input only a single value, a base of 10 is used for the
calculation.
• “ln(” is a natural logarithm function with base e.
• You can also use the & key when inputting an expression with
the form of “logmn” while using Math format. For details, see
Appendix <#020>. Note that you must input the base (base m)
when using the & key for input.
Appendix <#021> to <#023>
*1 A base of 10 (common logarithm) is used if no base is specified.
E-28
k Power Functions and Power Root
Functions
2
3
–1
3
X , X , X , X^, '(, '(, ^'(
Appendix <#024> to <#028>
k Rectangular-Polar Coordinate Conversion
Rectangular
Coordinates (Rec)
Polar Coordinates
(Pol)
• Coordinate conversion can be performed in the COMP and STAT
calculation modes.
Converting to Polar Coordinates (Pol)
Pol(X, Y)
X: Specifies the rectangular coordinate X value
Y: Specifies the rectangular coordinate Y value
• Calculation result θ is displayed in the range of –180° < θ < 180°.
• Calculation result θ is displayed using the calculator’s default angle
unit.
• Calculation result r is assigned to variable X, while θ is assigned
toY.
Converting to Rectangular Coordinates (Rec)
Rec(r,θ)
r : Specifies r value of polar coordinate
θ : Specifies θ value of polar coordinate
• Input value θ is treated as an angle value, in accordance with the
calculator’s default angle unit setting.
• Calculation result x is assigned to variable X, while y is assigned
to Y.
• If you perform coordinate conversion inside of an expression instead
of a stand-alone operation, the calculation is performed using only
the first value (either the r-value or the X-value) produced by the
conversion.
Example: Pol ('2, '2) + 5 = 2 + 5 = 7
Appendix <#029> to <#030>
E-29
k Other Functions
This section explains how to use the functions shown below.
!, Abs(, Ran#, nPr, nCr, Rnd(
|