Since I plan to use InTag numbering a lot, does it make sense that I specifically train Dragon for my personal number pronunciations? I discovered that this can be done via Dragon tool-bar submenu command “Audio/Improve recognition of word or phrase…”. If it makes sense, should I teach it up to (the max of) 300?
You shouldn’t have to train numbers relative to InTag numbering. I don’t recommend doing so unless it becomes necessary (i.e., necessary meaning case or number specific). One of the reasons why we use InTag numbering is precisely because Dragon generally gets them accurately.