## Sig Fig Question

Emily_Stenzler_2H
Posts: 195
Joined: Wed Sep 30, 2020 10:02 pm

### Sig Fig Question

In the textbook, I noticed numbers are sometimes written with a decimal at the end and no following digits, such as 350. pm. Is this to indicate that we should be using 3 sig figs instead of two (in this case)? Does that decimal make 350 3 sig figs instead of 2?

Jessie Hsu 1C
Posts: 90
Joined: Wed Sep 30, 2020 9:49 pm

### Re: Sig Fig Question

Yes you're absolutely right! 350. will be 3 sigfigs and 350 without the decimal is 2 sigfigs.

Micaela Estavillo
Posts: 55
Joined: Wed Sep 30, 2020 9:44 pm

### Re: Sig Fig Question

Correct, if its just 320 then there are only 2 sig figs in this case. If it was 320.0 it would be 3 sig figs.

Ashley Wagner 2A
Posts: 36
Joined: Wed Sep 30, 2020 9:32 pm

### Re: Sig Fig Question

Yes, it does have 3 sig figs since the decimal is after the 0 in 350.

Brennan McGurrr 3C
Posts: 90
Joined: Wed Sep 30, 2020 9:47 pm

### Re: Sig Fig Question

If you don't like that notation, another way to write 350 using 2 sig figs is using scientific notation. It would be 3.5x10^2.

Colin Squire 3B
Posts: 90
Joined: Wed Sep 30, 2020 9:35 pm

### Re: Sig Fig Question

Yes, the decimal does add to the significant figures!

Jacob Schwarz-Discussion 3I
Posts: 81
Joined: Wed Sep 30, 2020 10:01 pm

### Re: Sig Fig Question

we don't need to worry about Sig Figs for the midterm!!

IshanModiDis2L
Posts: 95
Joined: Wed Sep 30, 2020 9:49 pm

### Re: Sig Fig Question

It has 3 sig figs since the decimal is after the 0 in 350 and if there were not a decimal then 350 would only have two sig figs.

TiffanyBrownfield 2I
Posts: 85
Joined: Wed Sep 30, 2020 9:42 pm

### Re: Sig Fig Question

Yes, the decimal was used to indicate that the measurement was precise up to that point, and that the 0 should be considered a significant figure.

Dane_Beasley_1E
Posts: 68
Joined: Wed Sep 30, 2020 9:42 pm

### Re: Sig Fig Question

Yes you are correct. The reason there is a decimal after the 350. is to indicate 3 Sigfigs and not 2.

alexandralopez 3F
Posts: 92
Joined: Wed Sep 30, 2020 10:11 pm

### Re: Sig Fig Question

Yes, youre thinking is correct! it is 3 sig figs

Sam Wentzel 1F 14B
Posts: 129
Joined: Wed Sep 30, 2020 9:50 pm
Been upvoted: 1 time

### Re: Sig Fig Question

Yes. Sig Figs count all numbers proceeding and preceding the decimal point, unless the only number before the decimal point is a 0, and 0's preceding a non-zero after a decimal point a not counted, only numbers following and including the non zero are counted. Ex: 0.00305 there are 3 sig figs, being 3, 0, and 5.

105618850
Posts: 59
Joined: Wed Sep 30, 2020 9:38 pm

### Re: Sig Fig Question

Yes, the answer would have three significant figures.