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Question posted by meenakshisoni on September 24th, 2014

Percentage Problem Of Casio Fx 991es

If I type 100-10% I get an anser like 99.9 how to calculate percentage

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Answer #1: Posted by TechSupport101 on September 24th, 2014 8:00 AM

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TechSupport101

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Hi. Refer to page 24 of the User Guide here

http://www.helpowl.com/manuals/Casio/FX991ES/145884

as calculating percetages is not very direct on the model.

www.satechhelp.co.za

Related Casio FX-991ES Manual Pages

User Guide - Page 4

... 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.... REPLAY • The displays and illustrations (such as f, c, d, and e. Moreover, CASIO Computer Co., Ltd. shall not be liable to their initial default settings. Specify the angle unit...

User Guide - Page 5

... heat or dispose of it by burning it. Battery • After removing the battery from the calculator, put it in a safe place where it into the hands of small children and accidentally swallowed.... facing correctly when you load it will not get into the calculator. • Use only the type of battery specified for later reference. Doing so can result in this manual. E-3 Keep this...

User Guide - Page 6

... solution of this unit discharges slightly during shipment and storage. Doing so can remove printed markings and can damage internal circuitry. • Never drop the calculator or otherwise subject it might be subjected to twisting or bending. • Never try to become corrupted or lost completely. Heat can cause memory contents...

User Guide - Page 7

... does not improve display readability, 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 ...)c6(]CONT') This displays the contrast adjustment screen. E-5 Before Using the Calculator k Removing the Hard Case Before using d and e while the mode menu (which appears when you press N) is low...

User Guide - Page 8

...mode has been entered by for input of decimal places is in the VECTOR Mode. The calculator is more data above/below the current screen. There is degrees. The default angle unit ... will unshift and this : The keypad has been shifted by for input of a multi-statement calculation. The default angle unit is selected as the input/output format. The display currently shows an ...

User Guide - Page 9

...screens, which you can use to control how the calculations are executed and displayed. Important! • For a very complex calculation or some other type of a number table based on an expression Vector calculations Specifying the Calculation Mode (1) Press N to display the mode menu. Calculation Modes and Calculator Setup k Calculation Modes When you want to execute, the display may...

User Guide - Page 12

...Σ(, P(, Q(, R(, arg(, Conjg(, Not(, Neg(, det(, Trn(, Rnd( E-10 Next, you input calculation expressions just as shown below , it .The calculator automatically judges the calculation priority sequence for addition, subtraction, multiplication, and division, functions, and parentheses. k Initializing the Calculation Mode and Other Settings Performing the following procedure initializes...

User Guide - Page 13

Final Closed Parenthesis You can scroll left of a calculation, immediately before the = key is displayed, you can omit one... constant, or random number: 20 × A, 2 × π, 2 × i, etc. Omitting the Multiplication Sign You can show up to 99 bytes of the following cases. • Before an open parentheses (( ): 2 × (5 + 4), etc. • Before a function with Math Format...

User Guide - Page 15

... × 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) 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 ...

User Guide - Page 16

...215; 2 = by pressing A, which clears the calculation. Example: When you can also exit the error screen by mistake instead of 14 ÷ 10 × 2 = Use the insert mode for the...textbook. Important! • Certain types of expressions can then make necessary corrections. If this happens, divide the calculation into multiple parts and calculate each part separately. Further input ...

User Guide - Page 17

...Example 2: To input 1 + '2 + 3 MATH 1+!2 Math Math e+3 E-15 Function/Symbol Improper Fraction Mixed Fraction log(a,b) (Logarithm) 10^x (Power of 10) e^x (Power of e) Square Root Cube Root Square, Cube Reciprocal Power Power Root Integral Derivative Σ Calculation Absolute Value Parentheses Key Operation ' 1'(() & 1l($) 1i(%) ! 1!(#) w, 1w(x3) E 6 16(") 7 17(F) 1&(8) 1w(Abs) ( or ) Bytes...

User Guide - Page 18

...: Function Key Operation Resulting Expression Fraction ' log(a,b) Power Root & 16(") E-16 Math ! 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, you need to view the entire input expression again, press A and then press e. The following examples show the other functions that...

User Guide - Page 19

...into the following functions. 1l($), 1i(%), !, 6, 1!(#), 1w(Abs) Displaying Calculation Results in a form that includes π within irrational number display) display conditions are the same as... those for the input/output format, calculation results are always displayed using decimal values (no irrational number form) regardless of whether ...

User Guide - Page 20

.... Results that includes ' within irrational number display) results can have up to both the real part and the imaginary part. Complex number Abs calculations d. Arithmetic calculations of the above ranges. a. CMPLX Mode polar coordinate display (r ∠ θ ) The following conditions apply respectively to two terms (an integer term is always used ...

User Guide - Page 24

...Minute, Second (Sexagesimal) Calculations You can perform calculations using sexagesimal values, ... test sample originally weighing 500 grams, what percentage of 880 is 660. (75%) Increase...used in weight? (160%) What is the percentage change when a value is the syntax for ...( ) -2- 100 150 × 20% = 30 ( ) 150 × -2-0 100 Calculate what is the percentage increase in the mixed ...

User Guide - Page 33

x + 1 for the following types of functions. - A periodic function (y = sin(x), etc.) - Appendix Solve y = x2 - .... • SOLVE uses Newton's Method, so even if there are multiple solutions, only one of them will be returned. • Newton's Method can have problems obtaining solutions for x when y = 3, 7, 13, and 21. (Solutions: x = 2, 3, 4, 5 when y = 3, 7, 13, 21 respectively...

User Guide - Page 71

... as the argument of a function, make sure that the memory or variable value is a problem with the format of the calculation you are performing. • Action • Make necessary corrections. Argument ERROR • Cause • There is a problem with the cursor located at the position of the error. E-69 For more parts. When...

User Guide - Page 73

... for the type of these steps. (1) Check the calculation expression to make sure that it automatically initializes the calculation mode and clears memory contents. Even if the calculator is present.... Your calculator uses a TWO WAY POWER system that checks whether calculation functions are not what you are trying to perform. (3) If the above steps do not correct your problem, press...

User Guide - Page 75