I have forgotten many of things I learned about mathematics in school. However, I have some tests ahead of me, which involve math ability evaluation. Therefore I have to relearn it as soon as possible. I started with middle school level, and reviewed something like how to take the square root of numbers by hand, how to convert repeating decimals to fractions and the other way around, and exponent properties, etc,. Thankfully, there were plenty of math instruction videos shared online, which I could turned to when having questions. The thing is that I have a lot of math to relearn since I have forgotten much of it, while time is limited. May I can speed up a little bit going forward!