No, they're not. The range from 100 to 1,000 includes numbers like 100.6, 239.07,
5431/2, and 942.638, and those are not 'whole numbers'.
But the numbers in that range that have nothing after the decimal point, and have
no fraction after them, are all whole numbers.
The same is also true of any number that's notbetween 100 and 1,000 .
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101
All numbers from 1 to 100 which are whole numbers are integers
5050
The total of all of the numbers from 1 to 99 is 4950.
If you can count from 1 to 100, then you can name them all. (And in numerical order, I might add.)