What is the estimate of 552?

Answer 1

The front end estimate is 600. But estimating a single number, in isolation and without context, is a complete waste of time. It all comes down to the context of what needs to be done with the number.

If I had to add 552 to 1 trillion, I would estimate it as 0.
If I had to add 552 to 0.0000000001, I would use the number as given, or possibly the front end estimate. If I had to divide it by 5, I would estimate it as 550, because 550/5 = 110. If I had to divide it by 8, I would estimate it as 560, because 560/8 = 70.

Answer 2

To the nearest ten, 550