Number and the greatest number that can be rounded to the nearest ten thousand?

Answer 1

Any number, however big (or small) can be rounded to the nearest ten thousand.

0, rounded to the nearest ten thousand is 0

5001 rounded to the nearest ten thousand is 10,000

123,123,123,123,123,123 rounded to the nearest ten thousand is 123,123,123,123,120,000 and so on.