Leave the digit the same if the next digit is less than 5 (this is called rounding down) but increase it by 1 if the next digit is 5 or more (this is called rounding up). The rounded value must be a ...

Sir, Simon Herring is not alone in having confidence in such notions as divining, numerology and mantras (Letters, November 29). A significant proportion of the UK population puts its trust in ...

Last week, for my Philosophy of Psychology class, I had assigned one of Sigmund Freud's classic case studies, "Fragment of an analysis of a case of hysteria". To make life easier for my students I had ...

The first two significant figures are 5 and 2. As the next digit is 4 the 2 stays as it is. Therefore 5246 rounds to 5200 to 2 significant figures. (Notice that we must put in zeros to keep the number ...