All the advanced math you can learn is great. My friend has gone all the way to the top in college, taken every math course up to the most advanced and has done well. I barely scraped by after getting out of basic algebra, probably couldn't even do basic algebra anymore.
When standing in a store trying to figure out what something will cost, what multiple items will come to or what the tip should be on a meal, I always, hands down beat my friend to it by doing the math in my head! I almost always figure it out in my head before he has the total on his phone calculator
