## Sig Figs in 0.0380 [ENDORSED]

Michaela Capps 1l
Posts: 50
Joined: Thu Jul 27, 2017 3:00 am

### Sig Figs in 0.0380

In class, Lavelle said there were 3 sig figs and I was just confused on which zero was included in the 3 SF? Thanks!

K Stefanescu 2I
Posts: 68
Joined: Fri Sep 29, 2017 7:04 am

### Re: Sig Figs in 0.0380  [ENDORSED]

The last 0 is considered significant.
For further clarification, here are a few examples:
0.05 = 1sf (the 5)
0.00478 = 3sf (the 478, so any zeroes before these non-zero numbers are not counted)
678.0 = 4sf (the 0 after the decimal point is considered significant because it came after non-zero numbers)* be especially mindful of this case, as some questions will provide values of 5.0g, for example, and will require your answer have 2 sigfigs, even though we all shorthand this as simply "5" when calculating an answer.

Posts: 51
Joined: Fri Sep 29, 2017 7:07 am
Been upvoted: 1 time

### Re: Sig Figs in 0.0380

I would recommend going to Dr. Lavelle's website as it has a helpful text on Sig Figs for more practice.

Mitch Mologne 1A
Posts: 74
Joined: Fri Sep 29, 2017 7:04 am

### Re: Sig Figs in 0.0380

Zeroes are only considered significant figures when they are "sandwiched" between two non-zero numbers or a non-zero number and decimal point ( ex. 505, 9.09, 50.); or if it is at the end of decimal showing precision (34.0).

Remi Lathrop 1G
Posts: 51
Joined: Fri Sep 29, 2017 7:07 am

### Re: Sig Figs in 0.0380

So to be clear, 57,000 would have 2 sig figs whereas 57,001 would have 5. And 0.003 would have 1 sig fig whereas 2.003 would have 4 sig figs.

Janine Chan 2K
Posts: 71
Joined: Fri Sep 29, 2017 7:04 am

### Re: Sig Figs in 0.0380

Leading zeroes are not significant (in 0.032, the zeroes before 3 aren't significant so there would be 2sf). Trailing zeroes ARE significant (in 0.03000, all the zeroes after 3 are significant so there would be 4sf).