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 ...
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 ...
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 ...
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