This pack explains addition, subtraction, multiplication and division formulae and SUM, AVERAGE, MAX, MIN COUNT and IF functions. Students are told how to deal with errors in formulae, rules for construction of formulae, how to print formulae and how to use absolute cell references within formulae. Exercises for progression and consolidation are provided, together with solutions. NOTE: This pack is a re-write of Pack 01/02 to reflect the significant differences between Office 2007 and previous versions.