The exam paper we were working on in class has some model answers and examiner's comments on the OCR website
http://www.ocr.org.uk/download/sm/ocr_46075_sm_fs_exem_scr_can_a.pdf
and
http://www.ocr.org.uk/download/sm/ocr_46076_sm_fs_exem_scr_can_b.pdf
The second person got 52 out of 54 and shows how to use the planning sheet.
If you want some more practice - there's some questions & activities on
http://www.ocr.org.uk/download/sm/ocr_51920_sm_fs_act_bank_l1_l2.pdf
Any problems or any questions, email me on sgil6811@cooper.ocnmail.net or leave a comment on the blog.
Good luck on Monday - remember your calculators!