View source for Rules for addition and subtraction

The answer must retain the same number of digits to the right of the decimal point as were present in the value with the fewest number of digits to the right of the decimal point. 

Question: If you have 3.18 L of water and you add 0.01315 L more. How much water do you end up with?

Answer: It is easiest if you look write out the addition problem by aligning the decimal point.

[[File:sigFig_add.gif]]

The answer is 3.19 L; 3 significant figures.


==Content suitability==
BCIT courses:
<span class="pops">[http://www.bcit.ca/study/outlines/chem0011  CHEM 0011]</span>