600
580
590
590
590
If you rounded it to the nearest 10 it would become 590 because it is only 3 away from 590 buy 7 away from 600. Howver if you rounded it to the nearest 100 it would be 600, as it is only 7 away from it but it is 93 away from 500.
590
590
590
I think 590 because it's 589
1000
To the nearest ten, yes.