1.5 Rounding to decimal places

Sometimes the result of a calculation gives a number with lots of decimal places - far more than you need or could reliably measure. For instance, suppose a patient is required to receive 5 ml of medicine a day, evenly spaced in three injections. How much medicine should they be given in each dose?

To divide the 5 ml of medicine into three equal parts would mean measuring out 5 ÷ 3 = 1.6666 ml (where the 6s keep repeating, or recurring indefinitely). It's not realistic or feasib
Author(s): The Open University

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Copyright © 2016 The Open University

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