You can improve your math skills in such many ways.
Start those basic ways in mathematics just like adding, subtracting, multiplying and dividing then improve it to be equipped to those matters.
Next is to answer different equations and problems in Mathematics by yourself then verify to others who are good to that.
You can use the internet browser to search for more different challenges in Mathematics.
Practice in each of your free time answering things in Mathematics to improve everyday and to be best.