If you subtract 480.21 m from 839.389 m, how many significant digits would your answer have? Show your work.

Question

anonymous · Answer

how many do you think it should have?

anonymous · Answer

hero can you help me

anonymous · Answer

it shud hv SF with the number having least SF amongst both

hero · Answer

Significant digits is just a fancy way of saying you need to round it and it has be be accurate to the least accurate value. 480.21 is accurate to five significant digits, so your answer can only be as accurate as that. So when you find your answer, just simply round it to the nearest hundredth.

anonymous · Answer

So, the answer is 359.179 
It would have 6 significant digits ?

hero · Answer

Yes, but it can only be accurate to 5 significant digits.

hero · Answer

So round to the nearest hundredth

anonymous · Answer

i can see Hero is already taking care of this

anonymous · Answer

so, 359.18?

hero · Answer

Yes, that is correct.