1000
One thousand of them - to the nearest thousand, Two thousand of them - to the nearest two thousand, Four thousnad - to the nearest four thousand None - to the nearest whole number.
1000
0
We're rounding to the thousands place. How many thousands are in 3,100? Label the lower endpoint.
21079000000 rounded to the nearest hundred thousand is 21079000000
6500 to 749 9999 of them.
7464000 tons rounded to the nearest hundred thousand would be 7500000 metric tons.
All numbers can be rounded to the nearest ten.
88500
530
An infinite number.
Infinitely many. There are infinitely many numbers between any two numbers, and infinitely many between any two of those and so on.