Because the 650 is in line with the rest of the record, it wouldn’t enhance the application but wouldn’t diminish it either - whereas as you say, not submitting would let Admissions assume the score is below what the rest of the transcript would infer, perhaps in the 500s.. There are more downsides to not submitting than there are to sending the score so I’d submit that score.
I wouldn’t submit the 3 on the Calc AB test, since it won’t enhance the application and won’t result in credit (a 4 is the minimum needed to skip Math 140 or 110).