Casio FX-82AU PLUS manual Answers, 375

Page 20

Fractions and Decimals

Remember!

When you have a fraction or a decimaldisplayed on the screen pressing the nbutton will allow you to toggle between decimal and fractional representation. Pressing SHIFT

nwill toggle between an improper fraction and mixed numeral representation for expressions with a value greater than 1. Instructions for entering fractions in MathIO and LineIO are on pages 6 and 7.

Practice your skills with the following questions.

1.Express 134 as a decimal.

2.Express 2 78 as an improper fraction.

3.Change 0.135 to a fraction.

4.Write 2.65 as an improper fraction.

5.What is 11 as a mixed numeral?

5

6.Enter 5% into your calculator by pressing 5SHIFT(. Press pand n to express 5% as a decimal and as a fraction.

7.Express 36% as a fraction.

8.What is 8% as a decimal?

9.What number is equivalent to 125%?

10.Express 45% as a fraction.

11.Write 8.5% as a decimal.

12.What decimal is equivalent to 83 ?

13.What improper fraction is equivalent to4 25 ?

14.Express 8 as a fraction in its simplest form. (Enter the fraction then press p.)

12

15.Express 85 as a mixed numeral expressed in simplest form.

25

Answers

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 1.75

2

23

 

3

 

27

 

4

53

 

5 2

1

6

0.05,

1

7

9

8 0.08

9 1.25

8

 

200

20

 

5

20

25

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

9

 

11 0.085

 

12

0.375

 

13

 

22

 

 

14

 

2

15

17

 

 

 

 

20

 

 

 

5

 

 

3

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

© Sue Thomson and Shriro Australia PTY Limited. This page may be photocopied for classroom use.

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Contents Using the Casio fx-82AU Plus Scientific Calculator Publishing information Contents Getting started Comp calculations menusSetting decimal places and scientific notation Set up informationSetting the calculator to degrees or radians Fractions in the Line mode Fractions in the Math modeFractions and decimals Answers in different formsFractional indices Simplifying fractionsReciprocals Powers, math mode and brackets Negative, fractional indicesPowers and roots Determining powersUsing the M feature Determining rootsUsing inverse trig TrigonometryEntering trigonometric expressions Degrees, minutes and secondsChanging a decimal to degrees, minutes and seconds Changing radians into degrees or degrees into radiansRadians to degrees Degrees to radiansStatistics menu Turning frequency on or offExample StepContinuing with the example from the previous Mean Standard deviationUsing Ran# Random number functionRandom number formulas RanInt functionUsing the memories Using values stored in A, B, C, D, X or YIndependent memory M Storing values in A, B, C, D, X or YTips and hints Answers to fractions calculations are improper fractions Trouble shootingCalculator is using a comma in place of a decimal point Calculator is frozen Answers 37545% 79% 245% 1000% 120.5% F 2 G075 025 F 205 J 93.75 $84 84.375 $140.2511 8.55 Working with fractions114 2536 Fix, scientific notation and norm Remember121 76 D 216 728 D 128 152 73 D 6 C 1.3 D 6A7 25 D383 Roots and exponents16 − Check your calculator settings Cosθ = Tanθ = Sinθ =Tanα = Sinα = Cosα = 28 0 D 51 0 E 66 0 F 49Statistics Button pressing sequence for statistics is on pages 12 toScores Frequency Scores Frequencies Answers+ π 12 − π × π × 4.3 + 8.1 × 12.7 + 3 + + 8.1 ÷Right hand screen has a value stored in the memory 116.18Degrees ⇔ Radians Express your answerCorrect to 3 decimal places 9sin0.7 c90×10−4 9 Logs, natural logs and e5A 2 B Class Frequency GallipoliAustralia and New Zealand joined the First World War1 Want to know more? Waiting time investigation Playing dice simulation SimulationWhat you have to do Subtracting dice BingoGame rules

FX-82AU PLUS specifications

The Casio FX-82AU PLUS is a powerful scientific calculator designed specifically for students and professionals alike who require advanced mathematical functions and features. Renowned for its reliability and user-friendly interface, this calculator has become a staple in classrooms and workplaces around the globe.

One of the standout features of the Casio FX-82AU PLUS is its extensive range of functions. The calculator supports over 250 functions, making it capable of handling a variety of tasks in mathematics, physics, and engineering. These functions include everything from basic arithmetic operations to more complex calculations such as trigonometry, statistics, and calculus. This versatility makes it an ideal choice for high school students, university undergraduates, and professionals.

The FX-82AU PLUS boasts a natural textbook display, which allows users to view expressions and results in a format similar to how they appear in textbooks. This feature enhances understanding and reduces errors, making it easier for users to verify their calculations. The calculator also incorporates a two-line display, allowing users to see both the input and result simultaneously, fostering a seamless calculation experience.

Additionally, the Casio FX-82AU PLUS is equipped with a quick-function key for calculations, which streamlines the process of obtaining results. This feature, combined with its intuitive layout, enables users to operate the calculator efficiently, whether they are performing statistical analysis or solving complex equations.

Another impressive characteristic of the FX-82AU PLUS is its durability and long battery life. Designed with longevity in mind, it features robust construction that is well-suited for daily use, ensuring that it can withstand the rigors of classroom and fieldwork. The calculator is powered by a solar rechargeable battery combined with a backup battery, meaning users can rely on it in various lighting conditions, minimizing downtime during critical operations.

In terms of design, the Casio FX-82AU PLUS maintains a compact and lightweight profile, making it portable and convenient for students and professionals who are always on the go. Its ergonomic layout ensures comfort during prolonged use, allowing users to navigate through functions without unnecessary strain.

In summary, the Casio FX-82AU PLUS is more than just a calculator; it is a comprehensive tool that enhances mathematical learning and professional efficiency. Its wide range of functions, natural textbook display, and durable design set it apart as a preferred choice in the scientific calculator category, making it an essential tool for anyone engaged in mathematics or related fields.
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