Casio Fx82LB Manual

C A S I O  
f
x
- 8 2 L B
UNIVERSITY OF SOUTHERN QUEENSLAND
The Learning Centre | Learning and Teaching Support Unit 

MASTERING THE 
CALCULATOR USING THE 
CASIO fx-82LB
Learning and Teaching Support Unit (LTSU)
The Learning Centre
Guide book
Written by  
Linda Galligan 

Published by
University of Southern Queensland
Toowoomba Queensland 4350
Australia
http://www.usq.edu.au
©University of Southern Queensland, 2006.1.
Copyrighted materials reproduced herein are used under the provisions of the Copyright Act 1968 as amended, or 
as a result of application to the copyright owner.
No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any 
means electronic, mechanical, photocopying, recording or otherwise without prior...

TABLE OF
CONTENTS
PA G E
Introduction 1
1. A word about starting out2
2. Addition and subtraction3
3. Multiplication and division6
4. Brackets8
5. Powers10
6. Fractions15
7. Scientific notation17
8. Using the 1/x key 19
9. Factorial x!20
10. Using memory21
11. Statistics23
12. Trigonometric functions29
13. Exponential and logarithmic functions31
14. Degrees, minutes, seconds33
Review Calculator Exercises 35
Calculator Solutions 37 

Mastering the calculator using the Casiofx-82LB  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 Learning and 
Teaching Support Unit (LTSU) at USQ. The series comprises:
Mastering the calculator
•Using Casio fx-100AU (suitable for 82MS)
Using the Casio fx-100s (also suitable for Casio fx-570)
Using the Casio fx-82LB
Using the Casio fx-82TL
Using the Sharp EL-531LH
Using...

2  Mastering the calculator using the Casiofx-82LB
1. 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 on the display press 
If your calculator has RAD or GRAD on the display, press 
(You may have RAD or GRA instead of DEG. It doesn’t matter which one you have for any 
ordinary calculations.)
Now your...

Mastering the calculator using the Casiofx-82LB  3
2. Addition and subtraction
2.1 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 

4  Mastering the calculator using the Casiofx-82LB
2.2 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 
Example
If I want to add 471 and 575 but I typed
I can cancel 576 by typing  and then typing 
The display should read 1 046.
Try practising cancelling with the  key until you are comfortable with its use. 

Mastering the calculator using the Casiofx-82LB  5
2.3 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
Example
348 – 24 – 19
The keystrokes are
The display should read 305.
Sometimes you may have a sum like this:
-7 + 4
plus/minus key
subtraction key