Math
From wikinotes
Tutorials
khan academy https://www.khanacademy.org/ lamar U cheat sheets https://tutorial.math.lamar.edu/ Jim Hefferon math textbooks https://hefferon.net/
Numbers
Types of Numbers radix
General
Dimensional Analysis
Arithmetic
Arithmetic Operations Fractions Square Roots and Exponents
Algebra
Geometry
Probability/Statistics
Number Notation
3D Math
Quaternions
Misc
percentage faster/slower