Contents and Index

- The Keys
*Pictures of a Casio fx-85 calculator (the same as a Casio fx-83 calculator but dual-powered) where you can click on a key to find out what it does. I do suggest however that if you have not yet read the Introduction to these Pages you do so now, before you look at the pictures.* - Introduction
*About these Pages. You will miss a lot if you do not read this.* - Getting started
*Essential reading if you are* - Adding, subtracting, multiplying and dividing
*Not quite as straightforward as you might think* - Powers, roots, pi and reciprocals
*About squares, cubes and other powers, roots, π and other irrational numbers.* - Accuracy and ways of displaying your answer
*About accuracy, and using the SD key, fixed point and standard and scientific form.* - Using Memories
*About your calculator's memories and how to use them, and including about how to carry out trial and improvement calculations with them.* - Finding prime factors
*About how to use the FACT key to find the prime factors of a number* - Sexagesima
*About working with hours (or degrees) minutes and seconds.* - Working with angles and hyperbolic functions
*About working with angles in degrees, radians and gradients, and trigonometrical and hyperbolic functions.* - Cartesian (rectangular) and polar co-ordinates
*How to convert between rectangular and polar co-ordinates* - Factorials, permutations and combinations
*About finding factorials, permutations and combinations* - Logarithms and powers of 10 and e
*About natural, common and other logarithms, and powers of 10 and e.* - Absolute Value
*About how to find the absolute value of a number or expression* - Random numbers
*How to generate a random number or a list of random numbers for use in statistics or games etc.* - The verify key
*How to use your calculator to verify whether a statement is TRUE or FALSE* - The top line of the display
*A description of what the very tiny characters at the very top of the display mean* - Error messages and nerd stuff
*About error messages, errors, warnings, limitations, internal accuracy, faults, and other technical stuff*