Tiger I friul box has 220 links. divide by 2 (110) and then start putting together. I would do runs of 10 and then link them up and around 80 test fit to the kit. you will have spares left over which come in useful for spare tracks to go on the kit. At as rough guess I would say around 85-90 should do it.
Jagdtiger is longer and the tracks are different to the tiger so, if my big trumpeter 1/16 build is anything to go by, and I am just about to fit the tracks in the next day or so then 48 flat and 48 toothed tracks should be enough (96) per side... depending on the version you bought, still, all the Tiger II/Jagdtiger friul tracks have 210 links in the box so you will have spares over. Again useful for mounting on the kit.
I would say the same number for the panther too. Look at 96 per side, but have a dry fit at 80.
When it comes to painting etc I would recommend Xtreme metal Gunmetal on to the tracks without priming then leave for a day so that the paint can cure before fitting. A rub over with sandpaper first would help too.
James