Sharp EL-531LH User manual

SHARP E L -531LH

UNIVERSITY OF SOUTHERN QUEENSLAND

The Learning Centre | Learning and Teaching Support Unit

TABLE OF

CONTENTS

PAGE

Introduction 1

A word about starting out 2

1. Addition and subtraction 3

2. Multiplication and division 7

3. Brackets 9

4. Powers 10

5. Fractions 16

6. Using the x-1 key 18

7. Scientific notation 19

8. Factorial n!21

9. Using memory 22

10. Statistics 24

11. Trigonometric functions 31

12. Exponential and logarithmic functions 33

13. Degrees, minutes, seconds 35

Review calculator exercises 37

Calculator solutions 38

Your Notes 40

Mastering the Calculator using the Sharp EL-531LH 1

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. The series comprises:

Mastering the Calculator

•Using the Casio fx-100s (also suitable for Casio fx-570)

•Using the Casio fx-100AU

•Using the Casio fx-82LB

•Using the Casio fx-82MS

•Using the Casio fx-82TL

•Using the Sharp EL-531LH

•Using the Sharp EL-556L

•Using the Sharp EL-531RH

The instructions in this booklet only explain some of the keys available on your calculator

necessary for basic work in data manipulation. If you require more assistance please contact

The Learning Centre. If you would like information about other support services available

from The Learning Centre, please contact

The Learning Centre (TLC)

Learning and Teaching Support Unit (LTSU), S-Block

The University of Southern Queensland

Telephone: 07 4631 2751

Email: [email protected]

Fax: 07 4631 1801

Home page: http://www.usq.edu.au/ltsu

2Mastering 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

•To clear memory press

•If your calculator has FIX or SCI or ENG on the display press until the letters

disappear

•If your calculator has RAD or GRAD on the display press until the letter DEG

appears

•If all else fails press the RESET button on the back of your calculator

(e.g. - after replacing batteries

- to clear all memory content

- when an abnormal condition occurs and all keys are inoperative).

Mastering the Calculator using the Sharp EL-531LH 3

1. Addition and subtraction

1.1 To add numbers

Find the key

(it is shown on the photograph of the calculator here).

Example

To add 7 and 3, type

The display should read 10

Example

I want to find the total amount I earned in the past four weeks. If I earned $471, $575, $471

and $528, the key strokes would be

The display should read 2045.

addition key

cancel last number key

Backspace

key

4Mastering 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.

Now type

Note that the key cancels just the last digit.

Example

If I want to add 471 and 575 but I typed

I can cancel 6 by typing and then typing

The display should read 1 046. Each time is used, the last digit is cancelled.

Try practising cancelling with the key until you are comfortable with its use.

1.3 The key is used when you want to delete a whole number

Example

If you typed:

471 + 566

but you wanted 471 + 576

press the key. Note the 566 disappears. Press the key again, the + sign becomes

static. Now type in 576 then .

The display should read 1 047.

Note: For the EL-531GH calculator, use the to cancel the last number and use the

to delete a whole number and then retype the new number.

Mastering the Calculator using the Sharp EL-531LH 5

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 to undo]

Press and “8” disappears. Now type in “7” and press until the + sign stops

flashing.

1.5 To subtract numbers

Find the key (it is shown on the photograph of the calculator following).

Example

To subtract 35 from 257, type

The display should read 222

plus minus key

subtraction key

6Mastering 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.

You could also use the keystrokes

In this case the calculator recognises the – as a negative (not recommended to do it this way).

Mastering the Calculator using the Sharp EL-531LH 7

2. Multiplication and division

2.1 To multiply numbers

Find the key (it is shown on the photograph of your calculator here).

Example

To multiply 7 and 3, type

The display should read 21

To find 753 ×492, type

The display should read 370 476

key for division

key for multiplication

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