union query format

Hi I'm trying to combine 3 query's in a union query as follows:

rowdate nco nca nch aht asa svl %abandon

With Query 1;

04/01/02 1000 500 500 450 23 .23 .50
04/02/02 2000 500 1500 450 23 .23 .50

plus Query 2;

wtd 3000 1000 2000 450 23 .23 .50

and Query 3;

mtd 3000 1000 2000 450 23 .23 .50

I have 2 problems once the Union Query has run.
1. because Query 2 & 3 are text, it's forcing Query 1 into text and the
date order is all messed up.
2. I need to formate the fileds for svl & % abandon as a percentage.