The nearest hundred of 279 is 300. When determining the nearest hundred, you look at the tens digit of the number in question. Since the tens digit of 279 is 7, which is greater than 5, you round up to the nearest hundred, which is 300.
40,000,000
200 km
24.0
It doesn't need to be rounded. 2.1 km is the same as 2,100 meters. That's already rounded to the nearest meter, the nearest 10 meters, and the nearest 100 meters.
What does 279 round to?
300
The nearest hundred of 279 is 300. When determining the nearest hundred, you look at the tens digit of the number in question. Since the tens digit of 279 is 7, which is greater than 5, you round up to the nearest hundred, which is 300.
300
300
280
347 km to the nearest 100 km is 300 km. since 300 is close to 347
40,000,000
450 kilometers is approximately equal to 279 miles.
200 km
489 KM
As a wild guess, I would say that is is a km.