Original post by Cool-LightThe grade D/C in gcse maths isn't great - honest truth. You will struggle, there is no denial in that, but it isn't impossible. Actually everyone one struggles, even the A/A* students', they struggle too. Where they have the core knowledge to understand the easy stuff, they can whizz through that, but they'll spend majority of their time going through trig and calculus in c3/c4 and further math (those that take it). Whereas (no offence) a C grade would struggle to re-arrange x^4-3x^2+7=0, make X the subject of the formula, you can do it but it'll consume time, you may have to-do research just to learn how to this and that.. which will take-up time, and by the end of it, it might be bed time. In essence, you will most likely put a lot of hours into the subject learning the basics of how to complete the square, solving quadratics so much more, whilst your class mates are probably nailing the chapters one after the other. I'm pretty sure everyone that does A-level mathematics, or has done some-type of advanced mathematics have come across Examsolutions.net - Believe it or not, he (the host) got a C grade at GCSE mathematics - look what he's doing now, he's on some next level ting. A-level Mathematics - Easy if you do the work and understand the material. Some next level Hard Language when you don't do the work. It's your choice, you can pick it but it'll require a fair amount of effort. However if you're still doing GCSE math - I'm guessing your not in a high-set for math in your school (no offence intended), you're going to have to work independently at home and get ahead, make a check-list of what you need to learn and balance the date with the time given, and make sure you learn it. At the end of Year 10 I was at a D in GCSE Mathematics. Year 11 I got the A, I wasn't happy but meh, I just revised 1 hour a day after every 'Call of duty quick scope session'. A-level mathematics is a different story. I know people that got A/A* in GCSE Mathematics, and came out with U's and E's overall at AS math. It just goes to show that you can't day-dream in class, and sleep during the rest of the evening and expect to get an A/A* at A-level, it won't work. I don't care how 'naturally smart' you are, it won't work. It will test you, even if you slip through AS, core 4 would bite your rear-end; especially if you don't understand the content. You need to put the effort in, simple. Best of Luck. P.s. sorry for the LONG-ESSAY.