It is already at the nearest ten'. There are '39' tens.
39 x 10 = 390 .
390 is exactly thirty-nine tens, with nothing left over. So there's no other ten
that's any closer to it than it already is. It's already rounded to tens.
390
390
390
390
390
390
390
390
390
How do you Round 0.387 to the nearest hundredth
390
It is 400 and not 390