It is: 3240
It is: 3240
The answer will depend on the degree to which the number is rounded. Without any indication of that, it is not possible to answer the question sensibly.
3240
It then is 70 when rounded to the nearest ten
It is then 740 when rounded to the nearest ten.
81,215 rounded to the nearest ten thousands is 80,000
30
6512162 rounded to the nearest ten is 6512160.
2602 rounded to the nearest ten is 2600.
320