Sig Figs

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Arshiya
Posts: 69
Joined: Fri Sep 28, 2018 12:16 am
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Sig Figs

Postby Arshiya » Wed Oct 03, 2018 10:20 pm

If a question gives values with three significant figures and an answer is a whole number like 400, would I have to denote the answer with a decimal point like 400.?

Nicole Lee 4E
Posts: 60
Joined: Fri Sep 28, 2018 12:16 am
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Re: Sig Figs

Postby Nicole Lee 4E » Wed Oct 03, 2018 10:21 pm

400. or 4.00x10^2 would both work.

Ashita Tanwar 3H
Posts: 30
Joined: Fri Sep 28, 2018 12:23 am

Re: Sig Figs

Postby Ashita Tanwar 3H » Wed Oct 03, 2018 11:42 pm

For questions like these, do the trailing zeroes count as sig figs? For example, do 400.00 and 400.0 have the same number of sig figs?

Irene Zhou 1E
Posts: 73
Joined: Fri Sep 28, 2018 12:18 am

Re: Sig Figs

Postby Irene Zhou 1E » Thu Oct 04, 2018 12:34 am

400.00 and 400.0 do not have the same number of sig figs because 400.00 if more accurate to a hundredth place than 400.0

Daniel Chang 3I
Posts: 33
Joined: Fri Sep 28, 2018 12:23 am

Re: Sig Figs

Postby Daniel Chang 3I » Thu Oct 04, 2018 4:36 pm

400 only has one significant figure while 400. has three significant figures

Catly Do 2E
Posts: 64
Joined: Fri Sep 28, 2018 12:24 am

Re: Sig Figs

Postby Catly Do 2E » Thu Oct 04, 2018 5:01 pm

Whenever there is a decimal, you count from left to right starting with the first nonzero number, which is why 400.0 and 400.00 have a different amount of sig figs.

leediane0916
Posts: 31
Joined: Fri Sep 28, 2018 12:29 am

Re: Sig Figs

Postby leediane0916 » Thu Oct 04, 2018 5:09 pm

I think if the question starts off with 3 sigfigs you need to include the . at the end of 400 (400.) to make it 3 sigfigs and follow the rules!


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