365 is exactly half-way beween 360 and 370, but under the mathematical rule regarding rounding up you would probably round up to 370 (below 5 round down, 5 and above round up)
360
It's already there.
10
1530 1530
63546 rounded to the nearest ten is 63550.
590
295 to the nerrest ten
360
Look at the digit in the ones place. It is a 7. That will round up the number, so will increment the 6, giving 870 as the result.
The supermarket
yes it is
26