significant figures

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82.453 in 3 significant figures with scientific notation.

~hm..I don't know how to do this...it sounds simple but I'm confused.

• significant figures -

To three s.f. it is 82.4 (the next number is 5 and I round to the "even" number which is 4. If the number was 82.553 I would make it 82.6.
82.4 in scientific notation is
8.24 x 10^1

• significant figures -

Thanks Dr.Bob =)

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