194.
There were actually two options, 194 and 083, but as it needs to be a three digit number, 194 is more fitting.
216
In the number 635, the digit in the hundreds place is 6. It represents six hundred, which is the value of the hundreds place in this three-digit number.
5
There is no number. 100 is the only one that has a hundreds digit. It's impossible.
299
A zero
216
In the number 635, the digit in the hundreds place is 6. It represents six hundred, which is the value of the hundreds place in this three-digit number.
1We can not start a three digit number with 0, so 1 is the smallest digit.
5
1
There is no number. 100 is the only one that has a hundreds digit. It's impossible.
100
52,355,500 is an eight-digit number.
2400
299
440 or 541 or 642 or 743 or 844 or 945