The length of an exercise book is given as 20cm correct t...
The length of an exercise book is given as 20cm correct to the nearest centimeter. In which of the following ranges of possible measurement does the actual length lie?
19.5 - 20.4cm
19.1 - 20.9cm
19.9 - 20.1cm
19.95 - 20.05cm
19 - 21cm
Correct answer is A
In mathematics, numbers ranging from 0.5 - 0.9 are approximated to 1, while 0.1 - 0.4 are taken down to 0.
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