Question about significant digits

[JayTee]

It's been a long time since I have dealt with using significant digits. So I'm wondering, if I want to convert 74 degrees Celcius to Kelvin using the formula, degrees C + 273.15 = K,

is the answer 344 K? 347 K? or is it the exact 347.15??? or something else?

thanks

[Xhad]

You'd round to the nearest whole number.

http://en.wikipedia.org/wiki/Significanc...ance_arithmetic

[surftheiop]

Just make the temperature isnt actually 74.0 or something like that if your doing a lab b/c different thermometers are accurate to different significant digits.