503.8 rounded to the nearest whole number is 504
2
500
500
80,000 is already rounded to the nearest hundreds.
To round 504 to the nearest ten, we look at the digit in the tens place, which is 0. Since 0 is less than 5, we round down to 500. Therefore, 504 rounded to the nearest ten is 500.
0
0
0
8500
554600
6900