3490.0
3500
3490 rounded to the nearest tens is 3490. Rounded to the nearest hundreds, it is 3500. Rounded to the nearest thousands, it is 3000.
3490
As a whole number, 3490 is already rounded to the nearest hundredth.
3490
3,490 rounded to the nearest thousands is 3,000
3500
It is 5.2 when rounded to the nearest tenths.
65.6
It is then 52.8 when rounded to the nearest tenth
It is then 56.5 when rounded to the nearest tenth
It is 0.8 when rounded to the nearest tenth
It is then 20.2 when rounded to the nearest tenth