Khan Academy Video - https://www.youtube.com/watch?v=eCJ76hz7jPM

Professor Dave Explains - https://www.youtube.com/watch?v=Gn97hpEkTiM

Rounding Sig Figs - https://www.youtube.com/watch?v=y1WMQgxQ3X4

Sig Figs Tips and Tricks - https://www.thoughtco.com/how-to-determine-significant-figures-608326

Sig Figs practice quizlet 1 - https://quizlet.com/149466287/sig-fig-practice-flash-cards/

Sig Figs practice quizlet 2 - https://quizlet.com/152023447/significant-figures-practice-flash-cards/

Byjus Sig Figs page and practice - https://byjus.com/chemistry/significant-figures/