Sig Figs in the Middle of a Problem

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Louis Zhao 4C
Posts: 30
Joined: Sun Oct 07, 2018 12:17 am

Sig Figs in the Middle of a Problem

Postby Louis Zhao 4C » Sun Oct 07, 2018 9:03 pm

Does anyone know if we should follow sig fig rules in the middle of a problem or only round to the nearest significant digit once you get the final answer.

Christine Chow 4G
Posts: 43
Joined: Fri Sep 28, 2018 12:28 am

Re: Sig Figs in the Middle of a Problem

Postby Christine Chow 4G » Sun Oct 07, 2018 9:06 pm

My TA said that you can wait to round the sig figs until the end because if you round in the middle of a calculation, it could mess up your final answer (but if you do use the proper sig figs during the calculation and do everything right, even if your answer is off a little you still get the points). It's really up to you because you might also forget to round to the correct sigfig at the end.

Samantha Pacheco 2K
Posts: 60
Joined: Fri Sep 28, 2018 12:29 am

Re: Sig Figs in the Middle of a Problem

Postby Samantha Pacheco 2K » Sun Oct 07, 2018 9:27 pm

My TA also recommended using as many digits as possible during the calculation to avoid any rounding errors and use sig figs for the final answer

Jessica Dharmawan 1G
Posts: 32
Joined: Fri Sep 28, 2018 12:15 am

Re: Sig Figs in the Middle of a Problem

Postby Jessica Dharmawan 1G » Mon Oct 29, 2018 9:09 am

It is better to round off at the end of the problem, instead of in the middle of a calculation, to ensure accuracy. Use as many digits as possible in the middle of a calculation and just carry those numbers over until you're at the end of the problem.

Kaylee Kang 1G
Posts: 65
Joined: Fri Sep 28, 2018 12:24 am

Re: Sig Figs in the Middle of a Problem

Postby Kaylee Kang 1G » Mon Oct 29, 2018 11:27 am

It's better to not use sig figs until the very end of the problem! That will improve the accuracy of your answer.

Aleeque Marselian 1A
Posts: 60
Joined: Fri Sep 28, 2018 12:24 am

Re: Sig Figs in the Middle of a Problem

Postby Aleeque Marselian 1A » Mon Oct 29, 2018 2:21 pm

Although most of the time it doesn't have a drastic difference, it's better to apply significant figures for the final answer only. This way, your final answer can be more accurate, since no numbers were rounded in the process. Hope this helps!

Jayde Felix 4H
Posts: 59
Joined: Fri Sep 28, 2018 12:28 am

Re: Sig Figs in the Middle of a Problem

Postby Jayde Felix 4H » Mon Oct 29, 2018 3:51 pm

Just wait until the very end of the problem to round

Jasmine Chow 1F
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Joined: Fri Sep 28, 2018 12:16 am
Been upvoted: 1 time

Re: Sig Figs in the Middle of a Problem

Postby Jasmine Chow 1F » Wed Dec 05, 2018 12:27 pm

I would suggest waiting until the very end to round to the nearest sig fig. That way you still get the most accurate answer.

Jayde Felix 4H
Posts: 59
Joined: Fri Sep 28, 2018 12:28 am

Re: Sig Figs in the Middle of a Problem

Postby Jayde Felix 4H » Wed Dec 05, 2018 3:12 pm

Wait until the end, and even if you're a small amount off, you won't get marked down.

Zachary Menz 1D
Posts: 32
Joined: Wed Nov 07, 2018 12:17 am

Re: Sig Figs in the Middle of a Problem

Postby Zachary Menz 1D » Sat Jun 29, 2019 3:51 pm

By using significant figures only in your final answer, you reduce the chance of creating rounding errors. Be sure to use your scientific calculator for calculations and use the unrounded numbers until you get to your final answer, which you should use significant figures for.


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