Excel Number Pattern mixed ability reusable spreadsheets

Reusable mixed ability Excel spreadsheets for Excel / Open Office covering number pattern and associated activities: addition, subtraction, multiplication and division; inverse operations including multiplication and division by 10; halving and doubling; makes use of differentiated function machines, number lines and magic square puzzles; enter you own starting numbers for generated patterns and work out missing numbers. I.W.B. versions with working models to demonstrate number patterns. All sheets can be reused time and again with the press of the F9 key to generate new numbers with answers (can be displayed on I.W.B. for self-marking and repeated demonstration) and print to A4 to allow as much practice as required with additional sheets for lessons or extra homework practice.