Casio FX-82AU PLUS Trouble shooting, Calculator is using a comma in place of a decimal point

Page 18

Trouble shooting

The calculator is using a comma in place of a decimal point

Solution: In ‘display‛, ‘comma‛ has been selected instead of ‘dot‛. In the calculations menu press SHIFT MODE (SET UP) then arrow down by pressing the bottom of the round replay button.

Press 4(for display).

Then press 1for dot.

Answers to fractions calculations are improper fractions

There are several ways to deal with this issue. You can set the calculator to always display answers as a mixed numeral (see instructions below), or you can make use of N, the second function of the nbutton to toggle between mixed numerals and improper fractions and decimals.

If you want to set the calculator to answer as a mixed numeral

Solution: In the calculations menu press SHIFT MODE (SET UP) then arrow down by pressing the bottom of the round replay button.

Press 1 for mixed numeral or 2if you want to change to improper fractions.

The calculator is set to Maths mode but the fractions show the old way

You are working in the statistics menu rather than in calculations. Press MODE 1.

The calculator gives the wrong answer for calculations involving trigonometry.

Most likely the calculator is set to radians and the input is intended to be degrees. See the instructions on page 5 for changing from radians to degrees.

18

Image 18

Contents Using the Casio fx-82AU Plus Scientific Calculator Publishing information Contents Getting started Comp calculations menusSet up information Setting the calculator to degrees or radiansSetting decimal places and scientific notation Fractions and decimals Fractions in the Line modeFractions in the Math mode Answers in different formsSimplifying fractions ReciprocalsFractional indices Powers, math mode and brackets Negative, fractional indicesUsing the M feature Powers and rootsDetermining powers Determining rootsEntering trigonometric expressions Using inverse trigTrigonometry Degrees, minutes and secondsRadians to degrees Changing a decimal to degrees, minutes and secondsChanging radians into degrees or degrees into radians Degrees to radiansStatistics menu Turning frequency on or offExample StepContinuing with the example from the previous Mean Standard deviation Random number formulas Using Ran# Random number function RanInt functionIndependent memory M Using the memoriesUsing values stored in A, B, C, D, X or Y Storing values in A, B, C, D, X or YTips and hints Trouble shooting Calculator is using a comma in place of a decimal pointAnswers to fractions calculations are improper fractions Calculator is frozen Answers 375075 025 F 205 J 93.75 $84 84.375 45% 79% 245% 1000% 120.5%F 2 G $140.25Working with fractions 114 253611 8.55 Fix, scientific notation and norm RememberRoots and exponents 16 −121 76 D 216 728 D 128 152 73 D 6 C 1.3 D 6A7 25 D383 Tanα = Sinα = Cosα = Check your calculator settingsCosθ = Tanθ = Sinθ = 28 0 D 51 0 E 66 0 F 49Scores Frequency StatisticsButton pressing sequence for statistics is on pages 12 to Scores Frequencies AnswersRight hand screen has a value stored in the memory + π 12 − π × π × 4.3+ 8.1 × 12.7 + 3 + + 8.1 ÷ 116.18Correct to 3 decimal places Degrees ⇔ RadiansExpress your answer 9sin0.7 cLogs, natural logs and e 5A 2 B90×10−4 9 Gallipoli Australia and New Zealand joined the First World War1Class Frequency Want to know more? Waiting time investigation Playing dice simulation SimulationSubtracting dice Bingo Game rulesWhat you have to do