The course explains some that the main attributes of a scientific calculator and also encourages girlfriend to usage your calculator, both for daily arithmetic and also for more facility calculations that use the function keys together well. An essential sequences, which explain which keys to press, are had in every the activities, so you can shot out the concepts straightaway.

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Due to the wide selection of scientific calculators available, for the functions of this course we will certainly be concentrating on the Casio fx-83ES model. Various other calculators may function differently come the methods explained within this course.

This calculator is provided on the University courses starting with maths (Y182) and also Discovering mathematics (MU123), but would additionally be advantageous for numerous other process requiring the usage of a clinical calculator.

This gaianation.netLearn course is an adapted extract indigenous the up University course MU123 discovering Mathematics.

Learning outcomes

After researching this course, you should be maybe to:

understand the simple functions on her calculator

understand which calculator features are essential for a offered problem

understand what might go wrong when entering calculations and know how to settle them

apply expertise of calculator features to a variety of math calculations.

1 getting to recognize your calculator

The first 11 sections explain how to use the calculator and how to do different types of calculations. Section 12 consists of a calculator reference guide that you deserve to refer to as required for some of the main vital sequences.

This course is not an exhaustive list of every the calculator’s features. If you room using a different calculator, you have to use the equivalent features the your own calculator to carry out the activities in this guide. You might need to refer to your calculator hand-operated to carry out this.

The first step in utilizing your calculator efficiently is to make sure that you are acquainted with the layout the the secrets on the keypad, and that you have the right to understand the details on the display.

Figure 1 mirrors the different parts that the Casio fx-83ES calculator.


If you space using a various model that calculator, make certain that you have the right to identify similar functions on her model.

The calculator is switched on utilizing the key at the optimal right-hand corner of the keypad. Number 2 mirrors the different elements of this calculator’s display.

Throughout this section, calculator keys will be indicated using the price on the key enclosed in a box, for instance .


The lower half of the keypad contains the number keys, secrets for the simple operations that addition, subtraction, department and multiplication, and the key, i beg your pardon is pressed when you want the calculator to screen the result of the calculation you have actually entered. The tricks provided to insert brackets right into a calculation are in the centre of the row above the number keys.

Many tricks on the calculator have an ext than one use. The main role of a vital is published in white top top the an essential itself. The second function of the vital is printed in yellow over the key, and is accessed by pressing the button before pressing the key. Once you push the button, the symbol ‘

’ appears at the optimal left-hand edge of the calculator display screen to remind you that the switch has been pressed. That disappears once you press an additional key. Part keys likewise have a third function, printed above the crucial in red. This functions permit numerical values stored in the calculator memories come be supplied within calculations and also are accessed by pushing the button before the ideal key. When the button is pressed, the prize ‘
’ is shown at the peak of the calculator display. You will learn exactly how to usage the calculator memories later in ar 4.

Some calculator operations are accessed through a mechanism of menus the are displayed on the calculator screen, as displayed in figure 3. The compelled menu option is selected by pushing the number an essential associated with the option, as provided on the calculator screen.


When describing how to use various calculator functions, this guide gives the precise keys that you should press utilizing the symbols displayed on the keys. This is recognized as a ‘key sequence’. If the an essential sequence accesses the second function of a key, or a role from a menu, the name of this function will be given in brackets at the appropriate suggest in the vital sequence. Names in brackets are therefore not keys that you press yet simply define the role that is accessed using the previous key sequence. For example, to turn off the calculator, press (OFF). In this notation, (OFF) is no a an essential that you press, yet is the name of the second role of the key, which is accessed v the key.

The calculator has plenty of modes of operation that impact how math is entered and also displayed. These will certainly be explained later in this guide, but before progressing any type of further you need to reset her calculator to the default course settings.

To initialise your calculator come the default food settings, revolve it on and also then go into the following two crucial sequences:

(CLR) (Setup) (Yes)

(SETUP) (Norm)

Note the in the first key sequence, ‘CLR’ (which is brief for ‘clear’) is the second role of the key, and also ‘Setup’ is the surname of the on-screen menu option matching to the key. ‘Yes’ is the surname of the on-screen menu option equivalent to the key. This an essential sequence removes all ahead ‘setup’ settings on the calculator.

In the second an essential sequence, ‘SETUP’ is the surname of the second duty of the key, and ‘Norm’ (short for ‘normal’) is the on-screen food selection option corresponding to the key. Pushing the an essential selects to use ‘Normal 2’ mode, which will certainly be described in an ext detail in ar 5.

Note the difference in between ‘SETUP’, the second function of the key, and also the food selection option ‘Setup’.

Your calculator will currently be working in ‘Math’ mode, and the indigenous Math will certainly be displayed near the right-hand next of the top of the calculator display, as presented in number 4 below. Math mode is the recommended means of utilizing your calculator throughout this course together it enables mathematics to be entered and also displayed in a similar method to just how you would certainly write the on paper.


1.1 basic calculations

Basic calculations are gone into into the calculator in exactly the exact same order together they room written ~ above paper, together demonstrated in the complying with activity. The calculator display screens the calculation the you enter. Once you press , the answer is presented at the bottom appropriate of the screen.


Note the the calculator provides the BIDMAS rules. These say that any kind of expression within Brackets must be calculate first, then any kind of Indices (often called powers), complied with by Divisions and Multiplications and finally Additions and also Subtractions.


To calculate this effectively you should remember come insert the brackets right into the calculation utilizing the keys.


You may have noticed the in component (4) of the above activity, the calculation was too lengthy to fit on the calculator display. In together circumstances, the icons ‘

’ or ‘
’ show up at the left or appropriate of the display to show that there is more information in the direction. This information can be viewed by scrolling left or appropriate using the
and keys, i m sorry are found at the left and right political parties of the big cursor control button (labelled with the word ‘REPLAY’) located under the calculator screen.

If you type a very long calculation into your calculator, then you may view the cursor (which is usually shown as ‘ ’) change to ‘

’. This means that girlfriend are allowed to kind only at many 10 an ext characters. If you encounter this, you need to break her calculation into smaller parts.

The cursor is a flashing symbol indicating wherein the following item gone into into the calculator will appear.

1.2 fountain or decimals?

In activity 1 you set up your calculator to usage Math mode. In this mode, as soon as the result of a calculate is no a entirety number, it will certainly be shown as a fraction, such together

, wherever possible.

To obtain the answer in decimal form, you should press instead of , or you deserve to toggle in between the fractional and decimal outputs utilizing the key.

Remember, your calculator is in Math mode if the word Math is presented at the top of the calculator display. If your calculator is not in math mode, repeat the actions of activity 1.


In mathematics mode, calculating

provides the an outcome

Converting this to a decimal utilizing offers 0.1814671815.

1.3 Powers

There are several tricks on the calculator that allow you to perform calculations involving powers. For little powers such together squares or cubes over there are dedicated buttons, and also

, i m sorry are located in the function an essential area the the keypad. These are used in a comparable manner to exactly how you would write mathematics; for example, to enter
friend would push
. The display additionally shows the maths in the same method as you would certainly write it on paper.

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To calculate higher powers, for instance , you need to use the more general power vital . This is again offered in a herbal way. To go into , you use the vital sequence

. Note that after you push the key, a tiny box is presented on the calculator display containing the flashing cursor (‘ ’), which permits you to get in the power in the correct place. To relocate the cursor far from this box and ago to the main line of the display screen once the power has actually been entered, push the ideal arrow key at the right-hand side of the huge cursor manage button.