3 Rounding

Why might you want to round numbers? You may wish to estimate the answer to a calculation or to use a guide rather than work out the exact total. Alternatively, you might wish to round an answer to an exact calculation so that it fits a given purpose, for example an answer involving money cannot have more than two digits after the decimal point.

Figure 4 Rounding up and down

You will now explore each of these examples in more detail and practise your rounding skills in context.

OpenLearn - Introduction and guidance
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