1005 rounded to the nearest ten is 1010. When rounding anything less than five you round down. When rounding anything five or more you round up. The ones digit is 5, which means you round up, making the answer 1010.
60
It is then 740 when rounded to the nearest ten.
30
36,184 rounded to the nearest ten thousands place is 40,000.
2602 rounded to the nearest ten is 2600.
320
20
260
Rounded to the nearest ten it is: 564,630
5240
73127850