845 rounded to the nearest hundred is 800. This is because the value in the tens place "4" is less than 5.
500
0
845 rounded to the nearest hundred is 800. Rounded to the nearest 10 is 850
1400
800
840
800
500
80,000 is already rounded to the nearest hundreds.
0
0
845 rounded to the nearest hundred is 800. Rounded to the nearest 10 is 850
8500
554600
6900
98300
712500