500
503.8 rounded to the nearest whole number is 504
2
500
500
80,000 is already rounded to the nearest hundreds.
0
0
Well, honey, 504 rounded to the nearest ten is 500. It's not rocket science, just chop off the extra 4 and you're good to go. Math doesn't have to be complicated, darling.
8500
554600
6900
98300