If you ever tried to split a bill with friends at dinner, you probably realized they’re sort of lacking in math skills. Sure, the blame is somewhat on those of us who are still so mathematically inept for not paying attention in class as much as we should have. However, it would have been a lot easier to stay awake in class if what we were taught was as easy to remember as the tricks below. Even if only one of these tips make sense to you, you’re bound to feel like some sort of a math genius. I know I do.