Can you Ignore Null values in calculations

[ptaylor-west]

Is it possible to create a query that will use ingnore null fields when adding them together, I know I can use the Nz function to add the fields together if they are null, but equally if all the fields are null it returns a zero value. What I want to do is leave the fields blank if they are all null. I picked up the IGNORE NULL option for use in an Index and wondered if this could be used. Or does anyone have an alternative suggestion.

The problem I have is that zero does have a value in the output, whereas if it is left blank it means it has not been answered yet.