As Palash Dubey says, practice is the best way. Lots of practice. It's also helpful to make sure Nick Campbell's answer to How did Alon Amit get so good at mathematics? But I'll try to answer it in a different manner here. Long answer: Since I. If you use a calculator, it is hard to become good at Math. Use calculators only to check your answers. Unless it is geometry, like finding the angle of a triangle or. Sometimes, the hardest subject for some people is mathematics. There are so many formulas, equations, and.