depends on what your rounding it by. Really you cannot get there. Take for example 999999.9999999999...... You can always just keep adding more 9's digits out to as far as you can, and get a little closer to 1000000, but never quite get there.
3,500,000 rounds up. 3,499,999 rounds down.
3,500,000 rounds up. 3,499,999 rounds down.
There aren't any. If you are rounding to the nearest million, any number 500000 and above rounds to one million. 499999 and below round to zero.
3,500,000 rounds up. 3,499,999 rounds down.
That rounds to one million.
999.999
One million is already a pretty round number. To the nearest 170, 1000000 rounds to 999940.
Half of 100 is 50, so the largest number that ought to round to 400 to the nearest 100 would be 400 + 50 = 450; however, numbers exactly half way round up, so the largest whole number that rounds to 400 is one less than this, namely 450 - 1 = 449.
The largest single digit composite number is 9. The largest prime number is 17 million digits long. The definition of a composite number is any number that has at least one positive divisor other than one or the number itself (it is not a prime number). The largest composite digit is therefore longer than the largest prime number by at leaf +1.
The largest six-digit number is 999,999. It is the highest value that can be represented with six digits, where each digit is at its maximum of 9. This number is one less than one million, which is the smallest seven-digit number.
290,000,000 because 910,304 (the number after the millions places) is above half of the place to the left of it, for example it is more than 500,000, so it rounds up to 1 million, and you add one million to 289 million to get 290 million or 290,000,000.
It is 2.85 that rounds to 2.9 to one decimal place