Dimensional analysis

https://www.whatcom.edu/home/showpublisheddocument/3867/635859599434700000

https://www.chem.tamu.edu/class/fyp/mathrev/mr-da.html

Significant figures: Multiplying, dividing, adding, subtracting

https://www.mrwiggersci.com/chem/Tutorials/Ch2-Pract-Sig-Figs-in-Operations-Blacksburg.htm

http://www.sjutsscience.com/uploads/3/7/4/5/37458459/sig_figs_packet.pdf

https://www.purplemath.com/modules/rounding3.htm