Hey mate, I'm heading down on the 3rd, so I believe i'm the course after you. But I've been doing plenty of ThatQuiz, utilising a keypad, learning up to the 20x tables, to familiarise myself answering math questions quickly. But from what i've been told, the mental math in the SDT, isn't as hard as what's on the CBAT app. the questions are just different, sometimes more complex..