## Sig Figs

Posts: 93
Joined: Thu Jul 11, 2019 12:17 am

### Sig Figs

When are zeroes significant?
For example how many sig figs are in 32,000,000 compared to 0.3200 or 3.0200?

Kendall 3H
Posts: 52
Joined: Wed Sep 18, 2019 12:18 am

### Re: Sig Figs

32,000,000 has two sig figs. However, if there were to be a decimal point placed at the end of the number (ex/ 32,000,000.) then there would be 8 sig figs
0.3200 has 4 sig figs because the leading zero is not significant.
3.0200 has 5 sig figs. any time there is a trailing zero of final zero after a decimal place, it is significant.

Posts: 113
Joined: Thu Jul 11, 2019 12:16 am

### Re: Sig Figs

In addition to what has already been mentioned, it may be helpful to consider the following points:
1) Does the zero act as a place holder? If it does, it's not going to be a significant digit.
2) Is the zero between two significant figures? If it is, it the zero will be a significant digit.

Posts: 134
Joined: Sat Sep 14, 2019 12:17 am

### Re: Sig Figs

Is there a link or video we can watch that would explain how to identify sig figs?

PranaviKolla2B
Posts: 114
Joined: Fri Aug 30, 2019 12:17 am

### Re: Sig Figs

How do we know how many sig figs our final answers should have?

Alex Chen 2L
Posts: 86
Joined: Wed Sep 18, 2019 12:21 am

### Re: Sig Figs

PranaviKolla3G wrote:How do we know how many sig figs our final answers should have?

The final answer should have the same number of sig figs as the number with the least number of sig figs used in calculations. In other words, the final number cannot be more precise than the least precise number used to obtain it.

Areli C 1L
Posts: 95
Joined: Wed Nov 14, 2018 12:19 am

### Re: Sig Figs

Can we round to the least amount of sig figs that are allowed for each step in our calculation? So basically round at each calculation to 2,3 sig figs?