hi,
I did the functional skills in maths at level 2 last year and it was easy enough only took a few weeks at a learn direct centre. Without it i wouldn't have gotten my place for social work. Learn direct were really helpful and you just go and sit and revise and do papers online then when your ready sit the test. If you see if you can find one in your area, u may be able to pass it in time for uni starting if your schedule allows for you to be able to do so.
Good Luck