So if I'm bidding on multiple keywords it would wise to add multiple ads to match those keywords to keep the quality score up? Is that how the system works?
adding multiple ads will not increase quality score, but it is recommended to always be running two ads at all times. Let both ads get some click volume and then determine which ad is doing better, delete the underperforming and and try to beat the one that did good. You should always be adding a removing to improve. However don't base good on CTR, base good on conversion. Many times a low CTR ad will convert better than a high CTR ad. Conversion is 100% times more important than CTR since a slight increase in conversion will always out weight a light increase in CTR for bottom line.