significant figures

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kendal mccarthy
Posts: 88
Joined: Wed Nov 14, 2018 12:22 am

significant figures

Postby kendal mccarthy » Thu Oct 03, 2019 12:48 pm

Can someone help me out with 0's in sig figs? I think this is right but I'm not sure. 20 would have 1 sig fig. 20.0 would have 3 sig figs. 0.00002 would have 1 sig fig. 0.000200 would have three sig figs.

Parker Smith
Posts: 87
Joined: Thu Jul 25, 2019 12:15 am

Re: significant figures

Postby Parker Smith » Thu Oct 03, 2019 12:54 pm

As far as I know, the 0's are ignored if they are place holding values without a decimal point. I believe you are correct with your examples

Aliya Jain 2B
Posts: 86
Joined: Wed Sep 11, 2019 12:16 am

Re: significant figures

Postby Aliya Jain 2B » Thu Oct 03, 2019 12:56 pm

I'm pretty sure they're all right. Any zeros between two significant digits are significant. Also, a final zero or trailing zeros in the decimal portion only are significant.

Parker Smith
Posts: 87
Joined: Thu Jul 25, 2019 12:15 am

Re: significant figures

Postby Parker Smith » Thu Oct 03, 2019 1:01 pm

Okay stupid question but I've been sitting here for a while trying to figure out how to make a new post. Do you mind walking me through the steps?

805307623
Posts: 81
Joined: Fri Aug 09, 2019 12:17 am

Re: significant figures

Postby 805307623 » Thu Oct 03, 2019 1:35 pm

As a general rule with sigfigs: non-zero numbers are always significant, zeros between two significant numbers are significant, and trailing zeros are significant only in the decimal portion.

Manav Govil 1B
Posts: 89
Joined: Sat Sep 07, 2019 12:19 am

Re: significant figures

Postby Manav Govil 1B » Thu Oct 03, 2019 2:11 pm

I posted this on another thread...so here is a copy:

What tricks me up the most is the zeroes involved in sig-figs. I'll show you why:

250000 has 2 sig-figs
250000. has 6-sig-figs
250.000 has 6 sig-figs
250.001 has 6 sig-figs
1.00025 has 6 sig-figs
0.00025 has 2 sig-figs


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