Does anyone know this kittens approximate age

My sister in law adopted this kitten from a lady online, they said she is 8 weeks but she seems so small and has no molars. Also she has a hard time eating kitten chow so we moistened it

Either she's a runt... or 6-7 weeks old. I would take her to the vet for an exam and they can estimate how old she is and to ensure she is healthy. You should take her in any way.  She would probably be able to eat wet cat food better if she has a hard time with kitten dry food.

OK, thank you she's so small I didn't think she was 8 weeks, she is bringing her to the vet next week

No problem! Yeah she is pretty small to be 8 weeks. That is good.

Def. not 8 weeks.

If she can possibly weigh her, that's one way to know. Usually at 4 weeks old they will weigh a pound.

By 9 week reaching 2 lbs.

this should come in handy.
[article="32740"]Kitten Development Stages Illustrated Guide  [/article]

Thank you everyone, the kitten we estimated is about 6 weeks old she's just over a pound she is eating kitten chow, I told ny sister in law to moisten it with warm water and is also eating fancy feast canned kitten food

That's great .