Sig Fig Newtons

Significant figures (abbreviated sig. figs.) are used to round numbers, solve problems, and determine what decimal place number an answer can be rounded to to accurately represent a measurement. 

They are extremely difficult, but luckily with the help of the internet, I have been able to learn the ins and outs of them. I will highlight the main rules below.

1. 0's sandwiched between integers are significant
2. All nonzero numbers are significant
3. If there is no decimal point, all zeros preceding or following an integer are insignificant.
4. All zeros preceding an integer are insignificant
5. If there is a decimal, zeros to the right of the decimal point are significant
6. In problems, an answer can only be rounded to the place of the least number of sig figs in the problem. (if there is a number with 2 sig figs and a number with 3, you can only round to 2 places)

Here is the helpful video series that helped me learn this topic!