Rounded to th nearest whole number, it's 9. Rounded to the nearest tenth, it's 8.7 (eight point seven/eight and seven tenths). Hope this helps!
8.70
870
900.
It then is 70 when rounded to the nearest ten
rounded up to the nearest ten is 60
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.
320
2602 rounded to the nearest ten is 2600.
73127850
260