Numbers can be rounded to significant figures, which are usually non-zero digits. Practice how to round to significant figures ahead of your National 5 Maths exam with this maths quiz.
A GCSE Maths video about how and why we round numbers to significant figures. Significant figures start at the first non-zero number.
Scientific American presentsMath Dudeby Quick & Dirty Tips. Scientific American and Quick & Dirty Tips are both Macmillan companies. Did you know that your calculator occasionally lies to you? Okay, ...
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