What is 328 estimate?

Answer 1

The front end estimate is 300. 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 328 to 1 trillion, I would estimate it as 0.
If I had to add 328 to 0.0000000001, I would use the number as given, or possibly the front end estimate. If I had to divide it by 3, I would estimate it as 330, because 330/3 = 110. If I had to divide it by 40, I would estimate it as 320, because 320/40= 8.

Answer 2

To the nearest ten, 330