With exams approaching this is a short article with reminders and advice for anyone about to take a mathematics exam and who will need to use a scientific calculator.The most common calculator problems are:
– setting up the calculator in pizza profit calculator the right mode
– not being able to find the calculator manual!
– remembering to change calculator modes
– rounding and inaccurate answers
Why Use a Scientific Calculator?
Scientific calculators all use the same order for carrying pizza area calculator out mathematical pizza profit calculator operations. This order is not necessarily the same as just reading a calculation from left to right. The rules for carrying out mathematical calculations specify the priority and so the order in which a calculation should be done – scientific calculators follow the same order. This order is sometimes abbreviated by terms such as BODMAS and BIDMAS to help students remember the order of doing calculations.
1st. Brackets (all calculations within a bracket are done first)
2nd. Operations (eg squaring, pizza price calculator cubing, square rooting, sin, cos, tan )
3rd. Division and Multiplication
4th. Addition and Subtraction
Being aware of this order is necessary in order to use a scientific calculator properly. This order should always be used in all mathematical calculations whether using a calculator or not.
Scientific Calculator Check
There are two types of scientific calculator, the most pizza cost calculator recent type being algebraic scientific calculators. Algebraic scientific calculators allow users to type in calculations in the order in which they have been written down. Older scientific calculators need users to press the mathematical operation key after they have entered the number.
For example to find the square pizza calculator root of nine (with an answer of three) press: [button]
Algebraic scientific calculator: [SQUARE ROOT]  [=]
Non algebraic scientific calculator:  [SQUARE ROOT] [=]
Both these types of scientific calculator are fine for exams, but make sure you know how to use your own type.
If you are not sure whether you have a scientific calculator or not, type in:
 [+]  [x]  [=]
If you get an answer of 14, then you have a left to right non-scientific calculator.
If you get an answer of 10, then you have a scientific calculator as it has worked out the multiplication part first.
Lost Calculator Manuals
Calculator manuals tend to get lost very easily or you can never find them as an exam is approaching. A frequent request is what can you do if you have lost your calculator’s manual? If it is a relatively new model then you can download a copy from the manufacturer’s web site. If it is an old Sharp or old Casio calculator manual then you can still find these on the internet. Even with search engines, finding these manuals can take some time – the following link has information about new and old calculator manuals for Casio, Sharp, Hewlett-Packard and Texas Instruments: here.
Now that you have your calculator manual you can set your calculator to the correct settings. The standard settings are usually:
(use MODE button – choose normal not stat) NOT: SD or REG
(use MODE or DRG button) NOT: RAD OR GRAD
(use MODE or SETUP and arrow keys) NOT: FIX, SCI, ENG
Many calculators have a reset button on the back that can be pressed in using a pen or paper clip if you want the original factory settings.
The most common mistake is to leave your calculator in a previous mode and FORGETTING TO CHANGE IT BACK AGAIN ! (We’ve all done it, just try to avoid doing it in the exam !)