It's already there.
It is 270, exactly as in the question.
260 270
268 271 266 265 273
270 da nearest ten
270
270
280
270
270
It is: 270
The answer is 270.
270
270
270
270
270
270 rounded to the nearest hundred is 300.
273 to the nearest ten is 270.
It ends in a 4, so it is rounded down to give 270.