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