This statement is not true, since 1,000,000 has 7 digits, a value rounded up produces 6 digits. However, the smallest number to round up to 1,000,000 is 500,000, which has 6 digits.
7
1000000
1000000
999999
There are 17 such numbers.
10
-12
Since numbers equal to or greater than 5 are rounded up, and numbers equal to or less than 4 are rounded down, the largest 4-digit number that can be rounded off to 3000 would be 3004.
7
875
1000000
1000000
1000000
which three digit numbers round to 500 when rounded to the nearest hundred , and also round to the 460 when rounded to the nearest ten
51111 is the smallest five digit number that can be rounded to 60000
100000
999999