just a side note: MUEP maths credits for the whole year
@nliu, no physics or chem in first year? whatever will you do in all that free time you'll have next year? 
Guessing he'll move onto second year chem and/or physics (not sure what the prereqs will be with maths there, i.e. physics might need the harder math)? If you're going to end up with a semester or two where you can take a lighter load because of doing units early, it's probably best to leave the gaps until later years, that way you'll have more time when you have the harder third year units, rather than having a gap during the easier, first year.
...or Nliu1995 might be one of those crazy ones who try and do BSci in 2 years with overloading.
EDIT: I'm not sure if that can be done anymore anyways, due to filling credits and such. (I don't go to UoM though, so could be wrong here, just what I've heard).