I don't think 860 can be rounded to the nearest ten but if it can then it would be 850 or 870.
860
860
860
860
860.00
The answer is 900
To the nearest ten: 860 To the nearest hundred: 900
The tens, on either side of 864 are: 860 which is 4 units away and 870 which is 6 units away. So the nearest ten is 860.
900
To the nearest ten, 860
60
It is then 740 when rounded to the nearest ten.