## Number of significant figures

105099972
Posts: 5
Joined: Wed Feb 27, 2019 12:15 am

### Number of significant figures

How many significant figures should we use in homework problems?

Andrea_1H
Posts: 50
Joined: Wed Sep 18, 2019 12:18 am

### Re: Number of significant figures

It depends on the problem, I think. You should look at what is given in each problem and then use the lowest number of sig figs.

Lelija Kazlauskas 3J
Posts: 50
Joined: Thu Jul 11, 2019 12:16 am

### Re: Number of significant figures

Whenever doing calculations you want to make sure that your final answer is no more precise than the least precise answer. For example, when doing 6.23 + 4.5613, the answer won't be 10.7913, but rather 10.79. 6.23 is the least precise number within the calculations, so your final answer needs to reflect that.

Viviana Velasquez
Posts: 97
Joined: Sat Jul 20, 2019 12:15 am

### Re: Number of significant figures

You're supposed to go based off the value with lowest significant figures given in the problem. For example, if you were given the values 6.38 and 43.58 in a homework problem, your final answer should include 3 significant figures.

Aarushi Solanki 4F
Posts: 107
Joined: Sat Jul 20, 2019 12:17 am

### Re: Number of significant figures

Usually, in your answer, you use the same # of sig figs as the # of sig figs in the given number with the least sig figs, because it is the least precise.

305376058
Posts: 35
Joined: Thu Jul 11, 2019 12:17 am

### Re: Number of significant figures

The number of significant figures used depends on the numbers present in the given problem. Sig figs rely on the number given in the problem with the lowest number of significant figures.