to estimate; to assess; to calculate · (coll.) to reckon; to think (that...)

I don't think that I'll be able to get there on time.

How much time do you estimate it'll take you to do that?

We calculated that we could reach the place within two weeks.

It is estimated that only a few hundred pandas remain, with a small number of them being raised in zoos in China and abroad.

Last time I counted, I estimated that I know around 2500 Chinese characters.