Casio FX 83 ES Calculator

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Ihavenoideaaboutmathspapersthough,butit'saninterestingdiscussion.I'dneverhavethoughtfractionstobepreferable!

What are you going to do when you want to figure out how to do a more complicated task with your calculator? Equipped with a wide range of mathematical functions, the FX-83ES is capable of performing various calculations, including basic arithmetic operations, percentage calculations, and trigonometric functions. It also offers statistical calculations, allowing users to generate data plots and perform regression analyses. 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. Math e+1 Example 2: To input 1 + ' 2+3 MATH Math 1+!2 Math e+3 Example 3: To input (1 + 2 2 ) ×2= 5 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.

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. k Power Functions and Power Root Functions '( X2, X3, X–1, X k About the Display Your calculator has a 31-dot × 96-dot LCD screen. Example: Input expression Calculation result { k Display Indicators Sample Display: This indicator: STAT Means this: S The keypad has been shifted by pressing the 1 key. The keypad will unshift and this indicator will disappear when you press a key. 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. 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 Math Format Linear Format Mixed Fraction 7 3 2 1 3 ('7c3) (1'(()2e1c3) 7{3 2{1{3 Numerator Denominator Integer Part (7'3) Denominator Numerator (2'1'3) • Under initial default settings, fractions are displayed as improper fractions. • Fraction calculation results are always reduced before being displayed.

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”. 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. ExceptI'mnotdoingmathsorphysicsthisyear,justchemistrywherethemajorityofmathsiswithstandardformandverysmallnumbers(formoles,particlesetc.)andit'sannoyingmethatbyusingaminus-power(e.g10totheminus3)ithastogivetheanswerasafraction... Ishouldalsoaddthathavingitgiveananswerinfractionformbydefaultcanbeuseful(eginmaths/Physetcyoumaybeaskedtospecifyananswer'exactly'ieasurdorfractionratherthanroundeddecimalvalue),ivastlypreferitnowthatimusedtoit. thereshoulfbeabuttononyourcalculatorwhichlookssomethinglikeS<->D.sowhenyougetanansweranditsinfractionspressthatbuttonanditconvertsittodecimalsandnormalnumbers.HopethathelpsSexagesimal 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. JustgotanewCASIOfx-83GTPLUScalculatorforchemistrythisyear,Ilikeitexceptthefactthatdoingcalculationslike3.12x10-3(tothepowerofminusthree)gives39/12500whichisn'tveryuseful? All of the models mentioned above are allowed in any exam where calculators are permitted *; there is no distinction between a calculator for GCSE and one for A-level as far as JCQ (who make the exam regulations) are concerned. You can find the JCQ regulations in section 10 of this document.

So does anyone know of a handheld calculator which allows you to have commas after every third number? Thisisreallyannoyingme,themanualisconfusingandeverythingpeopletellmetodoisn'tworking?Surelyyoudon'thavetoworkwithstupidlysmallnumbersinfractionsallthetime? 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”. Can anyone recommend a decent scientific calculator, with the ability to add commas after each third number? 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.MostofthethingsIusethecalculatorforareforworkingoutamountsofthings,likehowmanymolesofasubstance,ormolarmassetc.Ican'tput39/12500ofamoleinanexam-orcanI? 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. EDIT:uponcloserinspection,idonthavethatcalculatorbuthaveonesimilar.Theabilitytochangeanswerformatahouldstillbetherethough,irecommendstudyingtheinstructionmanualforhelprethisissue I'vetriedthewholeSHIFT-->MODE-->2:LineIOthingandallitgivesmeisthefractionagain,seperatedbyacomma(e.g39,12500).