I think to the certain that maths are quite important in trading. You do not need advance skills in maths just like the user above said, even basic understanding that involves addition and subtraction are enough
Most new traders think their win rate is the most important math in their trading. It is not, you risk/reward ratio will determine your profitability more than a win rate. ... Capping your risk makes it easier to have a reward that is multiples of your potential risk. If you risk $100 to make $300 it is a 1:3 risk/reward.
Well, math is not obligatory, but I feel that it might help improve your trading results. Making trading decisions implies logic and math is considered to be the language of logic. Math makes your trading ideas visible and coherent.