280
280 rounded to the nearest 10 is 280 because there is no number on the right so you can't really do anything.
The answer is 280 because it is already a multiple of 10.
270
280
280
Ten integers can be rounded off to 280. An infinite number of numbers can be rounded off to 280.
281 rounded to the nearest ten is 280.
280
280
280
0
280
Ten integers can be rounded off to 280. An infinite number of numbers can be rounded off to 280.
281 rounded to the nearest ten is 280.
280
280
280
280
283 rounded of to the nearest tens is 280 and when rounded to the nearest hundreds is 300.
100