90
Rounded up to the nearest tens would be 100. Rounded to the nearest tens is 90.
100
100
100
Yes. Rounding 90 to the nearest hundreds results in 100.
It is: 100 and not 90
90
100
9000
853 rounded to the nearest 100: 900. 10853 rounded to the nearest 100: 10900.
It is then 90 when rounded to the nearest ten