3597, 3598, 3599
To the nearest hundred, 3600
3550 to 3649 -- 100 numbers
3600
3600
To round 3600 to the nearest thousand, you look at the hundreds digit, which is 6 in this case. Since 6 is 5 or greater, you round up. Therefore, 3600 rounded to the nearest thousand is 4000.
0
To the nearest hundred, 3600
3600
3600
3600
3600
3550 to 3649 -- 100 numbers
One thousand if you include 3600. The reason I say if you include it is you really aren't rounding 3600 to 3600. It's just 3600.
3600
3600
To the nearest hundred, 3600
To round 3600 to the nearest thousand, you look at the hundreds digit, which is 6 in this case. Since 6 is 5 or greater, you round up. Therefore, 3600 rounded to the nearest thousand is 4000.