This is the 12794th most frequent Russian word.
круглых
The Russian word "круглых" means "round" (genitive or accusative plural, or genitive singular feminine form).
Here, 'круглых' is used as an adjective in the genitive plural form describing 'столов' (tables), indicating their round shape.
У нас дома есть несколько круглых столов.
We have several round tables at home.
In this example, 'круглых' acts as an adjective in the prepositional plural form, used to describe 'рамках' (frames), emphasizing their circular shape.
На выставке были представлены картины в круглых рамках.
At the exhibition, there were paintings in round frames.
The word 'круглых' in this context is an adjective in the prepositional plural form modifying 'числах' (numbers), meaning approximations or rounded figures.