He's a внук - they are внуки
She's a внучка - they're внучки
She's (+..) + he's= внуки
‘Grandkids’ was curiously rejected, 2015–12–07
Is there a special word for "grandsons" and "granddaughters" or is внуки the only plural form?
Grandsons - внуки, granddaughters - внучки, and that's it. For
grandchildren you can use "внуки" or "внуки и внучки"
This is what any Russian congressman could say about his family.
it cannot be "are living"?
Yes, it can. There may be something else wrong with your answer. Next time, copy and paste your entire answer here.
Shouldn't "My sons and grandsons live in Germany" be accepted?
Дети means sons and/or daughters. There's сыновья for sons.
Would you call your 40 year old sons "children" in English? I'm honestly asking
Yes, we sometimes say 'adult children' if we want to be clear about this
It'd be the same in Russian взрослые дети
Yes, when you refer to your offspring, this is the correct word to use "my children" will always be my children, because I produced them.