What would you estimate 192.78 to?

Answer 1

The front end estimate is 200. But estimating a single number, in isolation and without context is a complete waste of time.

If I had to add 192.78 to 1 trillion, I would estimate it as 0.

If I had to add 192.78 to 0.0000000001, I would use 192.78 - not an estimate.