Mathematics is huge and can get extremely complex sooner than you expect. When this happens, the last thing you want is to be unfamiliar with some basic terminology and ideas like positional number systems, unit rates, greatest common divisor, rounding, tie-breaking, scientific notation, and so on and so forth.
This mini course allows you to quickly review your very foundations of mathematics and be able to confidently move forward with other topics that well assume knowledge of all these basic ideas. It covers some of the standard topics taught in pre-algebra courses across the world.