How to succeed in EPSO numerical reasoning tests

One common mistake of many candidates at the numericalreasoning tests is trying to use very often the calculator, probablyconsidering that this is the reason why we have this tool (doublyavailable, in fact: physical and on-screen), and maybe creating intheir minds a (false) sense of security, by thinking something like:“well, I am not very good in maths, but, at least, everything I do withmy calculator will be right...”.--