Directed numbers are something that a lot of people find confusing. I hope that this article will help you to get your head round them! What are directed numbers? “Directed numbers” means positive and negative numbers. “Positive” or “negative” describes…
All the Casio Classwiz calculator models – both the original “X” and the new “CW” models – feature ratio mode, which didn’t exist on their predecessor the fx-83/85 GT Plus. Although it’s perfectly possible to get by without ever using…
Can you tell, just by looking at the number 31845, whether it can be divided by 5 without leaving a remainder? How about rules of divisibility for 3 or 9 or 15: will there be a remainder if you divide…
Are you someone who always struggled with maths at school, and has tried to avoid it ever since… but now you find that you really need to become a mature student, or adult learner, and get a Maths qualification to…
You might be a little unclear on which calculators are appropriate for which exams. The short answer is that if a calculator is permitted in an exam – at least in England – then ANY calculator is fine*, as long…
