Casio FX 991 ES

I bought this calculator for my A level examinations. It is terribly handy, I do a lot of maths and be it calculus, vectors, complex numbers or statistics, this calculator will help you a lot. Not only does it boast 403 functions, and most of the keys look like that should be on a UFOs spaceship, if you read the handbook and know how to access and use the functions it is great. These functions are not ones that allow you to cheat ( sadly :P) but they do provide a good basis to check your answers, which can be very valuable when you have no clue whether you good be right or not. Also it comes ... more

Excellent brand name by an extremely reputable maufacturer of calculators for bot the beginner and the professional. Retails at approximately £16 from most good outlets or may be able to purchase on second hand cheaper and online if lucky. Miniscule buttons / controls makes this appliance difficult to handle and operate successfully. Appliance has 403 functions which is a good thing to have and excellent for matrix / stats / calculus. Comes with excellent handbook to assist the purchaser with operating instructions. IN MY OPINION this is an excellent calculator as it is also powered two ways ... more

I switched to this calculator because my university told me I had to. I am very glad they did. This is so much simpler and easy to use than other scientific calculators I have used in the past. Although it isn't really important, I really like the fact this is a brightly coloured calculator. Mostly they're black or dark grey and ever so dreary. This cream and pastel coloured calculator really brightens up maths! (well, a little bit) The solar panels aren't a feature of many scientific calculator, but they really are handy. The tiny batteries needed are so hard to find, and even harder to ... more