I know, I know, not hatchlings. Sorry, I couldn't resist. I think if you give weight and length, someone could give a better guess. Pictures are very deceiving when it comes to their actual size.
Ha I let you off, that was funny!! I was thinking that, pics are very deceiving lol I would get the sizes to ya but there back in Cyprus, I'm in the UK at the mo lol
The first two look to be adults, so I'll guess at least 7 yoa, but probably no more than 125 yoa.
The 3rd looks quite a bit younger/smaller, so, 12 months? I'm hedging my guess by noting the enclosure he/she's in, and assuming that it's a very recent pic, in all honesty.