Casio FX-82AU PLUS manual Simplifying fractions, Reciprocals, Fractional indices

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Remember you can toggle between the answer displayed as an improper fraction, mixed numeral and decimal. Refer to the section ‘answers in different forms‛ on the previous page.

Simplifying fractions

In either mode the calculator will express a fraction in its simplest form. Enter the fraction followed by p.

Reciprocals

The u button will find the reciprocal of a fraction. To find the reciprocal of 1½ enter the fraction and press p, then up.

Fractional indices

The fraction button can be used as an index.

OR In the Math mode the button pressing is 32fa3R5p.

In the line mode the button pressing is 32f3a5p. Note! The first bracket is supplied by the calculator and the second bracket can be omitted if it is the last entry before p.

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Contents Using the Casio fx-82AU Plus Scientific Calculator Publishing information Contents Comp calculations menus Getting startedSetting the calculator to degrees or radians Set up informationSetting decimal places and scientific notation Answers in different forms Fractions in the Line modeFractions in the Math mode Fractions and decimalsReciprocals Simplifying fractionsFractional indices Negative, fractional indices Powers, math mode and bracketsDetermining roots Powers and rootsDetermining powers Using the M featureDegrees, minutes and seconds Using inverse trigTrigonometry Entering trigonometric expressionsDegrees to radians Changing a decimal to degrees, minutes and secondsChanging radians into degrees or degrees into radians Radians to degreesTurning frequency on or off Statistics menuStep ExampleStandard deviation Continuing with the example from the previous MeanRanInt function Using Ran#Random number function Random number formulasStoring values in A, B, C, D, X or Y Using the memoriesUsing values stored in A, B, C, D, X or Y Independent memory MTips and hints Calculator is using a comma in place of a decimal point Trouble shootingAnswers to fractions calculations are improper fractions Calculator is frozen 375 Answers$140.25 45% 79% 245% 1000% 120.5%F 2 G 075 025 F 205 J 93.75 $84 84.375114 2536 Working with fractions11 8.55 Remember Fix, scientific notation and norm16 − Roots and exponents121 76 D 216 728 D 128 152 73 D 6 C 1.3 D 6A7 25 D383 28 0 D 51 0 E 66 0 F 49 Check your calculator settingsCosθ = Tanθ = Sinθ = Tanα = Sinα = Cosα =Scores Frequencies Answers StatisticsButton pressing sequence for statistics is on pages 12 to Scores Frequency116.18 + π 12 − π × π × 4.3+ 8.1 × 12.7 + 3 + + 8.1 ÷ Right hand screen has a value stored in the memory9sin0.7 c Degrees ⇔ RadiansExpress your answer Correct to 3 decimal places5A 2 B Logs, natural logs and e90×10−4 9 Australia and New Zealand joined the First World War1 GallipoliClass Frequency Want to know more? Waiting time investigation Simulation Playing dice simulationGame rules Subtracting dice BingoWhat you have to do