sig figs

Moderators: Chem_Mod, Chem_Admin

705121606
Posts: 68
Joined: Wed Sep 18, 2019 12:17 am

sig figs

Postby 705121606 » Tue Feb 04, 2020 10:17 pm

When we add or subtract, I know we are supposed to use the one with the least number of places after the decimal. But when we have two numbers without decimal points such as 524+340 would it be two sig figs because of 340 or would it be 864 because it still doesn't have an places after the decimal point?

Joanne Lee 1J
Posts: 100
Joined: Thu Jul 25, 2019 12:15 am

Re: sig figs

Postby Joanne Lee 1J » Tue Feb 04, 2020 10:47 pm

I think when we add or subtract, it's dependent on the place of the number. So, since the last significant figure it in the tens place for 340, the answer would have the last significant in the tens place.

Rida Ismail 2E
Posts: 139
Joined: Sat Sep 07, 2019 12:16 am

Re: sig figs

Postby Rida Ismail 2E » Tue Feb 04, 2020 10:54 pm

I agree with that. Significant figures for add and subtract only come from the decimal. If there is none there then when you calculate make sure ur answer has no decimal as well. It would not be correct to make it two sig figs because that would cut the number off in the hundreds place and that is not the same number as it should be


Return to “Phase Changes & Related Calculations”

Who is online

Users browsing this forum: No registered users and 2 guests