If you're looking to modify your graph's scale, you can use QlikView's built-in functionality for this. In the "Number" tab of the graph's properties, you can select a thousands, millions, and billions symbol (K,M,B, or whatever you prefer). This will adjust the graph's axis, but not the actual numbers.
If you need to adjust the actual numbers, I would recommend displaying everything in Ks - e.g. 0.01K for 10. It's not optimal, but it is the least confusing option I can think of for mixed values.