900
450.00...001 to the nearest 900.
It is: 900 because there is a 50 before the 800
3500
Not usually. It's closer to 1000 than it is to 900.
900
450.00...001 to the nearest 900.
what is it
3500
It is: 900 because there is a 50 before the 800
850
The digit in the tens position is 7, so we round up to get 900.
It would be 12750 to the nearest 25500.
To round a number to the nearest 10, you select from the closest multiple of ten that's higher (900) and the closest that is lower (890). Whenever a number has units of 0,1,2,3,4 you round down, and whenever a number has units of 5,6,7,8,9 you round up. In this case, the units are 5, so you round up, meaning that 895 is 900 when rounded to the nearest 10.
As the digit in the hundreds position is a 9, it rounds up to give 1000.
900
6,500 rounded to the nearest thousand is then 7,000