Hello, I'm currently studying for some scholarship exams (Math, Phy, Chem) that take place in june 16~20. As for Math, I'm studying number theory from Serge Lang's Basic Mathematics, and went through stewart's pre-calculus book (but I think I may be going over it again since I didn't master it completely yet). The thing is, I'm having some trouble deciding on books to improve even more on pre-calculus and to get a basic knowledge on Calculus (I need to be able to differentiate, integrate and find maxima and minima, not that hard) I was thinking about buying Quick Calculus: A self teaching guide By Kleppner&Ramsey (https://www.amazon.com/Quick-Calcul...rue&ref_=ox_sc_act_title_2&smid=ATVPDKIKX0DER) Because the test only needs a basic knowledge of Calculus and I've got so little time. Any advice on this? And is there a better book on pre-calculus than stewart's? (These are some example math exams from 2014 and 2015 exams: https://www.dropbox.com/sh/1j6f4rplsv3b33h/AADv1SM3kbGWk4r3_IJbDrXFa?dl=0) And as for physics, I'm currently studying and taking notes from Walter Lewin's MIT lectures. And doing some exercises on the Sears & Zemansky University Physics book I purchased. (Physics 2014/2015 exams: https://www.dropbox.com/sh/txqv20qwguyn33z/AAByidzZS8onloqYwk38rJBma?dl=0) So, is my approach correct? Or should I attempt to change it? What is your opinion? Thank you for reading this wall of text, I appreciate any help or advice you would give me.