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
80,000 is already rounded to the nearest hundreds.
500
0
0
845 rounded to the nearest hundred is 800. Rounded to the nearest 10 is 850
3600
8500
3571000
6248000
2600