Инструкция для калькулятора casio fx 220 plus

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Casio FX-220 Plus specifications

Below you will find the product specifications and the manual specifications of the Casio FX-220 Plus.

The Casio FX-220 Plus is a pocket-sized scientific calculator made primarily of plastic. It has a compact form factor, measuring 78 millimeters in width, 155 millimeters in depth, and 19.5 millimeters in height. With a weight of 115 grams, it’s lightweight and portable.

Featuring a two-line display, this calculator allows for easy input and viewing of mathematical calculations. It is powered by a single AA battery, providing convenient and long-lasting usage. The calculator does not have built-in capabilities beyond basic scientific functions, focusing on essential mathematical calculations.

The Casio FX-220 Plus offers a reliable and durable option for individuals in need of a scientific calculator. Its plastic housing material ensures its longevity, making it a suitable choice for long-term usage. The calculator’s simple design and functionality make it accessible to users of various mathematical backgrounds.

With its compact size and lightweight nature, the FX-220 Plus is easy to carry around, fitting conveniently into pockets or bags. The calculator’s reliance on a single AA battery provides flexibility in power source, as spare batteries are readily available.

Overall, the Casio FX-220 Plus fills the basic requirements of a scientific calculator, providing a portable and reliable option for users in need of essential mathematical functions. With its durable construction and practical design, it offers a well-rounded solution for everyday mathematical calculations.

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Frequently Asked Questions

Can’t find the answer to your question in the manual? You may find the answer to your question in the FAQs about the Casio FX-220 Plus below.

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1.  Important Information

• The displays and illustrations (such as key markings) shown in 

this User’s Guide 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.

 • Be sure to keep all user documentation handy for future reference.

2.  Sample Operations

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.  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.

fx-82MS/85MS/300MS/350MS: 

p!,(CLR)3(All)=

fx-82SX PLUS/220 PLUS: 

pr3(All)=

4.  Safety Precautions

   Battery 

  • Keep batteries out of the reach of small children. 
  • Use only the type of battery specified for this calculator in this 

manual. 

  5.  Handling Precautions

  •  Dim figures on the display of the calculator indicate that battery 

power is low. Continued use of the calculator when the battery 
is low can result in improper operation. Replace the battery 
as soon as possible when display figures becomes dim. Even 
if the calculator is operating normally, replace the battery at 
least once every two years (fx-82MS/82SX PLUS/220 PLUS), or 
three years (fx-85MS/300MS/350MS). 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 the calculator discharges slightly 

during shipment and storage. Because of this, it may require 
replacement sooner than the normal expected battery life.  

  •  Do not use an oxyride battery* or any other type of nickel-based 

primary battery with this product. Incompatibility between 
such batteries and product specifications can result in shorter 
battery life and product malfunction. 

  •  Avoid use and storage of the calculator in areas subjected 

to temperature extremes, and large amounts of humidity and 
dust.  

  •  Do not subject the calculator to excessive impact, pressure, 

or bending. 

RJA521989-001V01  

SA0912-A          Printed in China

fx-82MS
fx-82SX PLUS
fx-85MS
fx-220 PLUS
fx-300MS
fx-350MS

User’s Guide

CASIO Worldwide Education Website

CASIO EDUCATIONAL FORUM

E

  •  Never try to take the calculator apart.  
  •  Use a soft, dry cloth to clean the exterior of the calculator.  
  •  Whenever discarding the calculator or batteries, be sure to 

do so in accordance with the laws and regulations in your 
particular area.  

  * Company and product names used in this manual may be registered 

trademarks or trademarks of their respective owners. 

  6.  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 
nearby. 

  7.  Turning Power On and Off

  Press  

O to turn on the calculator.

  Press  

1A(OFF) to turn off the calculator.

   Auto Power Off 
  Your calculator will turn off automatically if you do not perform any 
operation for about 10 minutes. 

  8.  Adjusting Display Contrast

  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. 

  4. After the setting is the way you want, press  

A. 

   Important:  If adjusting display contrast does not improve display 
readability, it probably means that battery power is low. Replace 
the battery. 

  9.  Reading the Display

  The display of the calculator shows expressions you input, calculation 
results, and various indicators. 

  Input expression

  Calculation result 

  Indicators 

  10.  Specifying the Calculation Mode 

  When you want to perform this type of 
operation:   

  Perform this key 
operation:  

 General calculations 

N1(COMP) 

 Standard deviation 

N2(SD) 

 Regression calculations (fx-82MS/85MS/
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. 

  11.  Configuring the Calculator Setup

  Pressing the  

, key more than once displays additional setup 

screens. Underlined ( ___ ) settings are initial defaults. 

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.
  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   (Fix 3)

   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.
  Example: 1 ÷ 7 = 1.4286  

×  10 

–1 

  (Sci 5)

   Norm:  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.
  Norm 1: 10 

–2 

  | 

x 

|, | 

x 

|  

  10 

10 

     Norm 2: 10 

–9 

  | 

x 

|, | 

x 

|  

  10 

10 

 Example: 1 ÷ 200 = 5 

× 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      Specifies whether to display a dot or a 
comma for the calculation result decimal point. A dot is always 
displayed during input. 

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. 

 fx-82MS/85MS/300MS/350MS: 

p1,(CLR)c(Mode)=

fx-82SX PLUS/220 PLUS: 

prc(Mode)=

 12.  Inputting Expressions and Values

   4 

×  sin30  ×  (30 + 10  ×  3) = 120   v

 4  

*s 30  *( 30  + 10  * 3  )=

   Note:  • 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. 

  Calculation Priority Sequence

  When the priority of two expressions is the same, the calculation is 
performed from left to right. 

 1st 

 Function with parentheses: Pol( 

x 

,  

y 

), Rec( 

r 

,  

), 

RanInt#( 

a 

,  

b 

)* (*fx-82SX PLUS/220 PLUS only) 

 2nd 

 Type A functions: With these functions, the value is 
entered and then the function key is pressed. ( 

x  

3 

,  

x  

2 

,  

x  

−1 

, 

x 

!, ° ’ ”,  

m,  m

1 

,  

m

2 

,  

n, °,  

r 

,  

g 

)  

 3rd 

 Powers and roots: ^( 

x  

y 

),  

x  

‘

 4th  

Fractions 

 5th 

 Implied multiplication of  

π ,  

e 

 (natural logarithm base), 

memory name, or variable name: 2 

π , 3 

e 

, 5A,  

π A, etc.  

 6th 

 Type B functions: With these functions, the function key is 
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 

, (−))  

 7th 

 Implied multiplication of Type B functions: 2 

‘

3, Alog2, etc.  

 8th  

Permutation ( n P r ), combination ( n C r ) 

 9th 

 Multiplication, division ( 

× , ÷) 

 10th  

Addition, subtraction (+, –) 

  Correcting and Clearing an Expression

   To delete a single character or function: 
  1234_  

→   ddD  →  12 4 

  
    To insert a character or function into a calculation: 
  123_  

→   d!D(INS) e  →  1243

  • The cursor changes from “_” to “ 

t”. 

  
    To clear all of the calculation you are inputting:  Press  

A.

  13.  Basic Calculations

  Fraction Calculations

2 + 1 =   1

3     2       6

1

2  

$  3   +  1   $  2   = 

1  

{1  {6. 

1  =  1

2    2

4 − 3

4  

— 3  $ 1  $ 2  = 

1  

{2.

    Note:   • 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.

  
    To switch a calculation result between improper fraction and 
mixed fraction format:   Press   

1$( d/c ).  

  
    To switch a calculation result between fraction and decimal 
format:   Press   

$. 

   Percent Calculations

   150 

×  20% = 30 

150  

* 20  1=(%)  

30. 

Calculate what percentage of 880 is 660. (75%)

660 

/ 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. 

  Degree, Minute, Second (Sexagesimal) 
Calculations

 The following is the input format for a sexagesimal value: {degrees} 
$ {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

 A simple key operation transforms a displayed value to engineering 
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. 

 Replay  

(Not included on the fx-82SX PLUS) 

  While a calculation result is on the display, you can press  

d or  e 

to edit the expression you used for the previous calculation. 

 4 × 3  + 2.5 = 14.5 

4  

* 3  + 2.5  = 

14.5 

 4 × 3  − 7.1 = 4.9

(Continuing) 

dYYYY- 7.1  = 

4.9

  Answer Memory (Ans)

  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 =  579   

123  

+ 456  = 

579.  

789 –  579  = 210  

(Continuing) 789  

-G= 

210.

  Variables (A, B, C, D, E, F, X, Y) 
 

(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.

   Independent Memory (M)

  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

 fx-82MS/85MS/300MS/350MS: 
 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) 

10 

* 5  l 

50.

To subtract the result of 10 + 5 from M 

(Continuing) 

10 

+ 5  1l(M–)  

15.

To recall the contents of M 

 fx-82MS/85MS/300MS/350MS: 
  

(Continuing) 

tl(M)  

35.

   fx-82SX PLUS/220 PLUS: 

(Continuing)  

n 

35. 

    Note:  Variable M is used for independent memory. 

  Clearing the Contents of All Memories

  Independent memory and variable contents are retained even if you 
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.

 fx-82MS/85MS/300MS/350MS: 

p!,(CLR)1(Mcl)= 

fx-82SX PLUS/220 PLUS: 

pr1(Mcl)=

 14.  Function Calculations

 
   π   :    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, tan, sin  

−1  

, cos  

−1  

, tan  

−1   

:  Trigonometric functions. Specify 

the angle unit before performing calculations. See 

1

. 

   sinh, cosh, tanh, sinh  

−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

. 

   10  

x 

,  

e  

x 

:  Exponential functions. See 

4

. 

   log  

:  Logarithmic function. See 

5

. 

   ln  

:  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, Rec   :  Pol converts rectangular coordinates to polar coordinates, 
while Rec converts polar coordinates to rectangular coordinates. 
See 

8

.

  Pol( 

x 

,  

y 

) = ( 

r 

,   )          Rec( 

r 

,   ) = ( 

x 

,  

y 

) 

  Rectangular  

Polar

Coordinates (Rec) 

Coordinates (Pol)

k

  Specify the angle unit 
before performing 
calculations.
  Calculation result  

θ  is 

displayed in the range 
of −180°  

θ        180°. 

   x     

!   :  Factorial function. See 

9

. 

   Ran#   :  Generates a 3-digit pseudo random number that is less than 
1. See 

10

.

   RanInt#  (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

. 

   Rnd   :  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

. 

   Note:  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.

  Examples

   sin 30°= 0.5       

v 

s 30  = 

0.5 

  sin 

−1 

0.5 = 30°   

v 

1s(sin 

−1 

) 0.5  

= 

30. 

   sinh 1 = 1.175201194  

ws(sinh) 1  =  

1.175201194 

  cosh 

–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 

1.2 

×  10 

3 

 = 1200  

1.2  

* 10  M 3  = 

1200. 

  (5 

2 

) 

3 

 = 15625  

( 5  x)W= 

15625. 

k

1

1

2

2

3

3

4

4

5

5

6

6

7

7

LY700-4E_091226.indd   1

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09.12.26   10:02:55 AM

09.12.26   10:02:55 AM

1. Important Information

• The displays and illustrations (such as key markings) shown in

this User’s Guide 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.

• Be sure to keep all user documentation handy for future reference.

2. Sample Operations

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. 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.

fx-82MS/85MS/300MS/350MS: p!,(CLR)3(All)=

fx-82SX PLUS/220 PLUS: pr3(All)=

4. Safety Precautions

Battery

• Keep batteries out of the reach of small children.

• Use only the type of battery specified for this calculator in this

manual.

5. Handling Precautions

• Dim figures on the display of the calculator indicate that battery

power is low. Continued use of the calculator when the battery

is low can result in improper operation. Replace the battery

as soon as possible when display figures becomes dim. Even

if the calculator is operating normally, replace the battery at

least once every two years (fx-82MS/82SX PLUS/220 PLUS), or

three years (fx-85MS/300MS/350MS). 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 the calculator discharges slightly

during shipment and storage. Because of this, it may require

replacement sooner than the normal expected battery life.

• Do not use an oxyride battery* or any other type of nickel-based

primary battery with this product. Incompatibility between

such batteries and product specifications can result in shorter

battery life and product malfunction.

• Avoid use and storage of the calculator in areas subjected

to temperature extremes, and large amounts of humidity and

dust.

• Do not subject the calculator to excessive impact, pressure,

or bending.

RJA521989-001V01 SA0912-A Printed in China

fx—82MS

fx—82SX PLUS

fx—85MS

fx—220 PLUS

fx—300MS

fx—350MS

User’s Guide

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, dry cloth to clean the exterior of the calculator.

• Whenever discarding the calculator or batteries, be sure to

do so in accordance with the laws and regulations in your

particular area.

* Company and product names used in this manual may be registered

trademarks or trademarks of their respective owners.

6. 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

nearby.

7. Turning Power On and Off

Press O to turn on the calculator.

Press 1A(OFF) to turn off the calculator.

Auto Power Off

Your calculator will turn off automatically if you do not perform any

operation for about 10 minutes.

8. Adjusting Display Contrast

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.

4. After the setting is the way you want, press A.

Important: If adjusting display contrast does not improve display

readability, it probably means that battery power is low. Replace

the battery.

9. Reading the Display

The display of the calculator shows expressions you input, calculation

results, and various indicators.

Input expression

Calculation result

Indicators

10. Specifying the Calculation Mode

When you want to perform this type of

operation:

Perform this key

operation:

General calculations

N1(COMP)

Standard deviation

N2(SD)

Regression calculations (fx-82MS/85MS/

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.

11. Configuring the Calculator Setup

Pressing the , key more than once displays additional setup

screens. Underlined ( ___ ) settings are initial defaults.

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.

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 (Fix 3)

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.

Example: 1 ÷ 7 = 1.4286 × 10

–1

(Sci 5)

Norm: 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.

Norm 1: 10

–2

Ͼ | x |, | x | м 10

10

Norm 2: 10

–9

Ͼ | x |, | x | м 10

10

Example: 1 ÷ 200 = 5 × 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 Specifies whether to display a dot or a

comma for the calculation result decimal point. A dot is always

displayed during input.

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.

fx-82MS/85MS/300MS/350MS: p1,(CLR)c(Mode)=

fx-82SX PLUS/220 PLUS: prc(Mode)=

12. Inputting Expressions and Values

4 × sin30 × (30 + 10 × 3) = 120 v

4 *s 30 *( 30 + 10 * 3 )=

Note: • 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.

Calculation Priority Sequence

When the priority of two expressions is the same, the calculation is

performed from left to right.

1st

Function with parentheses: Pol(

x , y ), Rec( r , Ƨ ),

RanInt#(

a , b )* (*fx-82SX PLUS/220 PLUS only)

2nd

Type A functions: With these functions, the value is

entered and then the function key is pressed. (

x

3

, x

2

, x

−1

,

x !, ° ’ ”, m, m

1

, m

2

, n, °,

r

,

g

)

3rd

Powers and roots: ^(

x

y

),

x

‘

4th Fractions

5th

Implied multiplication of π ,

e (natural logarithm base),

memory name, or variable name: 2 π , 3

e , 5A, π A, etc.

6th

Type B functions: With these functions, the function key is

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

, (−))

7th

Implied multiplication of Type B functions: 2 ‘3, Alog2, etc.

8th Permutation ( n P r ), combination ( n C r )

9th

Multiplication, division ( × , ÷)

10th Addition, subtraction (+, –)

Correcting and Clearing an Expression

To delete a single character or function:

1234_ → ddD → 12 4

To insert a character or function into a calculation:

123_ → d!D(INS) e → 1243

• The cursor changes from “_” to “ t”.

To clear all of the calculation you are inputting: Press A.

13. Basic Calculations

Fraction Calculations

2

+

1

=

1

3 2 6

1

2 $ 3 + 1 $ 2 = 1 {1 {6.

1

=

1

2 2

4 − 3

4 — 3 $ 1 $ 2 = 1 {2.

Note: • 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.

To switch a calculation result between improper fraction and

mixed fraction format: Press 1$( d/c ).

To switch a calculation result between fraction and decimal

format: Press $.

Percent Calculations

150 × 20% = 30 150 * 20 1=(%) 30.

Calculate what percentage of 880 is 660. (75%)

660 / 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.

Degree, Minute, Second (Sexagesimal)

Calculations

The following is the input format for a sexagesimal value: {degrees}

$ {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

A simple key operation transforms a displayed value to engineering

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.

Replay (Not included on the fx-82SX PLUS)

While a calculation result is on the display, you can press d or e

to edit the expression you used for the previous calculation.

4 × 3 + 2.5 = 14.5 4 * 3 + 2.5 = 14.5

4 × 3 − 7.1 = 4.9

(Continuing) dYYYY— 7.1 = 4.9

Answer Memory (Ans)

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 = 579 123 + 456 = 579.

789 – 579 = 210 (Continuing) 789 —G= 210.

Variables (A, B, C, D, E, F, X, Y)

(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.

Independent Memory (M)

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

fx-82MS/85MS/300MS/350MS:

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) 10 * 5 l

50.

To subtract the result of 10 + 5 from M

(Continuing) 10 + 5 1l(M–)

15.

To recall the contents of M

fx-82MS/85MS/300MS/350MS:

(Continuing) tl(M)

35.

fx-82SX PLUS/220 PLUS: (Continuing) n 35.

Note: Variable M is used for independent memory.

Clearing the Contents of All Memories

Independent memory and variable contents are retained even if you

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.

fx-82MS/85MS/300MS/350MS: p!,(CLR)1(Mcl)=

fx-82SX PLUS/220 PLUS: pr1(Mcl)=

14. Function Calculations

: 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, tan, sin

−1

, cos

−1

, tan

−1

: Trigonometric functions. Specify

the angle unit before performing calculations. See

1

.

sinh, cosh, tanh, sinh

−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

.

10

x

, e

x

: Exponential functions. See

4

.

log

: Logarithmic function. See

5

.

ln

: 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, Rec : Pol converts rectangular coordinates to polar coordinates,

while Rec converts polar coordinates to rectangular coordinates.

See

8

.

Pol(

x , y ) = ( r , Ƨ ) Rec( r , Ƨ ) = ( x , y )

Rectangular Polar

Coordinates (Rec) Coordinates (Pol)

k

Specify the angle unit

before performing

calculations.

Calculation result

θ

is

displayed in the range

of −180° Ͻ

θ

Ϲ 180°.

x ! : Factorial function. See

9

.

Ran# : Generates a 3-digit pseudo random number that is less than

1. See

10

.

RanInt# (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

.

Rnd : 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

.

Note: 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.

Examples

sin 30°= 0.5 v s 30 = 0.5

sin

−1

0.5 = 30° v 1s(sin

−1

) 0.5 = 30.

sinh 1 = 1.175201194 ws(sinh) 1 = 1.175201194

cosh

–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

1.2 × 10

3

= 1200 1.2 * 10 M 3 = 1200.

(5

2

)

3

= 15625 ( 5 x)W= 15625.

k

11

22

33

44

55

66

77

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