1. Manuals
  2. Brands
  3. Sharp Manuals
  4. Calculator
  5. EL-531LH
  6. Mastering instructions

Sharp EL-531LH Mastering Instructions

Hide thumbs
Table of Contents

Advertisement

Quick Links

UNIVERSITY OF SOUTHERN QUEENSLAND
The Learning Centre | Learning and Teaching Support Unit

Advertisement

Table of Contents
loading

Related Manuals for Sharp EL-531LH

Summary of Contents for Sharp EL-531LH

  • Page 1 UNIVERSITY OF SOUTHERN QUEENSLAND The Learning Centre | Learning and Teaching Support Unit...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS PAGE Introduction A word about starting out Addition and subtraction Multiplication and division Brackets Powers Fractions Using the x Scientific notation Factorial n! Using memory Statistics Trigonometric functions Exponential and logarithmic functions Degrees, minutes, seconds Review calculator exercises...
  • Page 3 Calculator solutions Your Notes...

  • Page 4: Introduction

    Mastering the Calculator using the Sharp EL-531LH Introduction This is one in a series of booklets prepared to assist students who are learning to use a calculator. They have been prepared by staff in The Learning Centre from the Office of Preparatory and ACademic Support (OPACS) at USQ.

  • Page 5: A Word About Starting Out

    Mastering the Calculator using the Sharp EL-531LH A word about starting out • Make sure you are in the correct mode selection and that all previous data is cleared. • For e.g. To perform arithmetic operations press • To clear all values press •...

  • Page 6: Addition And Subtraction

    Mastering the Calculator using the Sharp EL-531LH Addition and subtraction 1.1 To add numbers Backspace cancel last number key addition key Find the (it is shown on the photograph of the calculator here). Example To add 7 and 3, type...
  • Page 7 Mastering the Calculator using the Sharp EL-531LH 1.2 Sometimes you make an error when typing in a number If this happens use the key to cancel the number and then type in the correct number and continue. Example If you want to enter 3 + 4 but accidentally type press to cancel the 5.
  • Page 8 Mastering the Calculator using the Sharp EL-531LH 1.4 When you want to edit, use the keys to move the cursor to the left or right Example If you typed 471 + 568 +, but you wanted 576 Press the until the number 8 begins to flash [press...
  • Page 9 Mastering the Calculator using the Sharp EL-531LH Example 348 – 24 – 19 The keystrokes are The display should read 305. Sometimes you may have a sum like this: -7 + 4 You can use the key. The key strokes are The display should read -3.

  • Page 10: Multiplication And Division

    Mastering the Calculator using the Sharp EL-531LH Multiplication and division 2.1 To multiply numbers Find the key (it is shown on the photograph of your calculator here). key for multiplication key for division Example To multiply 7 and 3, type The display should read 21 To find 753 ×...
  • Page 11 Mastering the Calculator using the Sharp EL-531LH 2.2 To divide numbers Find the key (it is shown on the photograph of the calculator) Example To divide 35 by 7, type The display should read 5 To divide 7 905 by 85, type...

  • Page 12: Brackets

    Mastering the Calculator using the Sharp EL-531LH Brackets Find the set of bracket keys on your calculator. The EL-531LH allows you to many sets of brackets. RH bracket key LH bracket key Example Do the calculation 471 – (93 + 11 + 2) on the calculator.

  • Page 13: Powers

    Mastering the Calculator using the Sharp EL-531LH (c) 4 + 5 [2 (3 + 7)] [to use two sets of brackets just press the same button; this calculator can take up to 6 sets of brackets] ---------------- - Answers: 30; 180; 104; 1 Powers 4.1 Squaring and higher powers...
  • Page 14 Mastering the Calculator using the Sharp EL-531LH Example To square 6, that is, find 6 , type The display should read 36 [The first number you put in is the 6. This is the y and the second number you put in (2) is x.
  • Page 15 Mastering the Calculator using the Sharp EL-531LH Exercise 3 You can use this key for other powers as well. Try these examples (a) 7 (b) 8 (c) (0.4) (you do not have to type the brackets in) (d) (–7) (you do not need to type the brackets in)
  • Page 16 Mastering the Calculator using the Sharp EL-531LH Exercise 4 Try these by looking at the table of squares you completed on the previous page and then check your answers on your calculator __________________________________________________________________________ The answers are 4, 12, 10, 21, 7, 13, 11, 19.
  • Page 17 Mastering the Calculator using the Sharp EL-531LH Exercise 5 Complete the following without using the calculator because 8 because because Check your answers on the calculator. __________________________________________________________________________...
  • Page 18 Mastering the Calculator using the Sharp EL-531LH 4.3 Other roots You can also use the root key on the calculator. Find the on your calculator. To get to this key you must press first. root key Look at the examples below.

  • Page 19: Fractions

    Mastering the Calculator using the Sharp EL-531LH -- - and the display should read 2. ¼ (c) 16 and the display should read 2. Note: • Root key is a function above the power key, so you will need to activate it with the SHIFT •...
  • Page 20 Mastering the Calculator using the Sharp EL-531LH fraction key -- - On the key the ‘a’ represents the whole part of a mixed -- - number and the ‘ ’ represents the fraction part of a mixed number. When the number you are typing is a proper or improper fraction the ‘a’ is zero and there is no need to type a value for it.

  • Page 21: Using The X -1 Key

    Mastering the Calculator using the Sharp EL-531LH Example -- - ----- - Find Using the calculator the key strokes are: 72 which is read as ----- - and the display will show 8 ⎡ ⎡ Note if you now press the display will read 647 72.

  • Page 22: Scientific Notation

    Mastering the Calculator using the Sharp EL-531LH This is a very useful key in more complex calculations. Find the key on your calculator. Example × -- - -- - is the same as You can input this in your calculator by pressing ÷...
  • Page 23 Mastering the Calculator using the Sharp EL-531LH Press , the screen shows Where 7.24E03 is the calculator’s computational symbols for 7.24 × 10 Example If you want to multiply two numbers e.g. 8.34 × 10 × 4.28 × 10 –2 .

  • Page 24: Factorial N

    Mastering the Calculator using the Sharp EL-531LH Factorial Look at your calculator and find the key with the symbol n! on it. You will come across this symbol when doing the Binomial Distribution. This is called the factorial key. to activate n! Use it to find the 3! and 5!.

  • Page 25: Using Memory

    Mastering the Calculator using the Sharp EL-531LH Factorial rule The number of ways of arranging n items in order is known as ‘factorial n’ which is symbolised as n! where: n! = n × (n – 1) × (n – 2) × ... × 3 × 2 × 1...
  • Page 26 Mastering the Calculator using the Sharp EL-531LH To make sure memory is clear, first press and make sure you are in normal calculation mode [may need to press mode 0]. A small M appears in the display when you put something in memory.

  • Page 27: Statistics

    Mastering the Calculator using the Sharp EL-531LH Example 2 calculate the following: --------- - --------- - --------- - to clear the memory press press the following keys: your answer should be 11.39917438 (There are other memory keys in your calculator – the X, Y keys, accessed by using STO and RCL –...
  • Page 28 Note: For the El-531GH, the keys are as follows for e.g. 2 The difference between σ and s varies with different calculators. On the Sharp EL-531LH, σ is denoted by σx and s is denoted by sx . The positions of these green keys is shown on the diagram below.
  • Page 29 Mastering the Calculator using the Sharp EL-531LH IMPORTANT: Before starting any computations always clear the statistic’s memories using I will use the data set A (–5, 2, 3, 4, 11) to demonstrate the use of the calculator. Step 1: Input the observations.
  • Page 30 Mastering the Calculator using the Sharp EL-531LH Note: For the Sharp EL-531GH Step 3: Step 4: After you are in the statistics mode and cleared the statistics memories, the keystrokes required are: The screen should display n = 5. and the display will read 5 (you can skip this step) and the display will read 3.
  • Page 31 Mastering the Calculator using the Sharp EL-531LH Note: For the Sharp EL-531GH, clear all memory in statistics mode using and use instead of to access all other statistical functions. 10.2 Mean and standard deviation of frequency distribution Given below is the frequency table for the weights (kg) of a random sample of 30 first year university female students.
  • Page 32 Mastering the Calculator using the Sharp EL-531LH Note: Check that you have cleared all previous data. Press The keystrokes required are: The display should read n = 30 Press and the display should read 61.766667 as the mean Press and the display should read 1.1943353 as the sample standard deviation s and the display should read 1.4264369 as the variance s...
  • Page 33 Mastering the Calculator using the Sharp EL-531LH (b) The sample of snail foot lengths Snail foot length (cm) Answers: (a) Rainfall statistics mean: = 1 265.3 mm standard deviation: s = 336.4 mm (sample standard deviation) variance: = 113141.7 mm...

  • Page 34: Trigonometric Functions

    Mastering the Calculator using the Sharp EL-531LH 11. Trigonometric functions The keys involved are: Important: Make sure that your calculator is in the correct mode. For example, if your calculator has RAD or GRAD on the display and you wish to work in degrees, press the DRG key until the display shows DEG.
  • Page 35 Mastering the Calculator using the Sharp EL-531LH The keystrokes on the calculator are: The display should read 1.819851171, so the length of x is about 1.8 cm. Example 2 In the right-angled triangle below, the length of the hypotenuse needs to be calculated.

  • Page 36: Exponential And Logarithmic Functions

    Mastering the Calculator using the Sharp EL-531LH θ –1 To find the value of , you need to use the cos key. The calculator keystrokes are: Note: You must first get the value of the division by using brackets. Your display should read 60°. If it does not, check that you are in degree mode.
  • Page 37 Mastering the Calculator using the Sharp EL-531LH log 2 log 20 ⇒ log 2 log 20 log 20 ⇒ = log 2 To find the value of a , the keystrokes are: The display should read 4.3219281. ≈ 4.32 . Confirm this by using the key.

  • Page 38: Degrees, Minutes, Seconds

    Mastering the Calculator using the Sharp EL-531LH Your display should now read 3.3019272 Note: You could use the ‘ln’ key instead of the ‘log’ key – the answer would still be the same. Try it! 13. Degrees, minutes, seconds The key involved is This key can be used for problems involving degrees, minutes and seconds or hours, minutes and seconds.
  • Page 39 Mastering the Calculator using the Sharp EL-531LH The display should show 1.728343, so x is approximately 1.73 Example 2 If you wish to convert an angle in degrees to its equivalent in degrees, minutes and seconds: e.g. 34.88°, the keystrokes are: The display should read 34°52°48.00...

  • Page 40: Review Calculator Exercises

    Mastering the Calculator using the Sharp EL-531LH Review calculator exercises 1. Perform the following calculations (i) (5 + 4) × 3 (ii) 12.5 – 8 ÷ 0.5 × 3 6 8 – -------------------- - (iii) 12.8 ----------------------- - (iv) 16.5 3.8 –...
  • Page 41 Mastering the Calculator using the Sharp EL-531LH Calculator solutions (i) (5 + 4) × 3 = 27 Make sure your calculation is in comp mode. (ii) 12.5 – 8 ÷ 0.5 = -3.5 × 3 6 8 – -------------------- - (iii) = 2.5...
  • Page 42 Mastering the Calculator using the Sharp EL-531LH 0.1366 0.2000 ± ------------------ - ------------------ - 4.1333 3.000 – 2.015 = 1.3325 or 0.9341 √ ÷ 6 + 0.2x ÷ 6) = Calculator keys: 2.015 × (0.1366x + 4.1333 – 3 = Display reads 1.3325...
  • Page 43 Mastering the Calculator using the Sharp EL-531LH Your Notes...

Table of Contents