I've never been very good at quick guesses like that.

Eight to ten years was my quick guess.

In his mind, he endured a quick guess about what kind of weather would come to a place like this.

Even so, I made a quick guess at what had happened.

I took a quick mental guess at a pregnant and abandoned secretary.

And at a quick guess, she'd seen at least six armed people.

Can you hazard a quick guess at how many people are in the ground?

A quick guess told him there were at least a dozen.

A quick guess put him around the 350-pound mark.

His quick guess was that Moore had been dead about two hours, and the final report more or less agreed with him.