The answer depends on the extent to which you are rounding it.
4
the answer is 4
That rounds off to 4.
.08 or 8 centavos. If the cut off digit is 5-9 round up. If the cut off digit is 0-4 round down.
4 million
3500
It is 4.486
4,000,000
Look at the digit in the ones position, which is a 4. So we round down to give 86390 as the answer.
Assuming rounding to the nearest power of 10, as it is followed by a 6 it will round up to 5.
1.0 x 10^4
To round off 14.045 to the nearest 0.1 kg, you need to look at the digit in the second decimal place, which is the 4 in this case. Since 4 is less than 5, you would keep the 14.0 as is, making the rounded value 14.0 kg.