The answer depends on the units used for 2.500: pounds, milligrams, tons?
If that's 2.500 grams, it rounds to 3 g
250
3g
2500
5.670 rounded to the nearest whole number is 6
3000
It is 2500
To the nearest 10: 2470 To the nearest 100: 2500
2500
2500
2500
2500
2500
2500
2500
5.670 rounded to the nearest whole number is 6
3000
It is 2500
To the nearest 10: 2470 To the nearest 100: 2500
Rounded to the nearest hundred - it would be 2500.