A dotted eighth equals 3 16ths - 3 8ths is a dotted 4th. 5 8ths is not a quarter note plus an eighth. 2 eighth make one quarter - so 5 8ths is two quarters plus an eighth. Or am I confused?!
you're completely right of course.
that's what happens when I get distracted while typing
3 8ths is a dotted quarter
5 8ths is a half note plus an eigth
3 16ths is a dotted eigth
5 16ths is a quarter note plus a sixteenth