Answer :

To solve the problem of finding the difference between the largest 5-digit number and the smallest 6-digit number, follow these steps:

1. Identify the largest 5-digit number.
- The largest 5-digit number is 99999.

2. Identify the smallest 6-digit number.
- The smallest 6-digit number is 100000.

3. Calculate the difference between these two numbers.
- Subtract the largest 5-digit number (99999) from the smallest 6-digit number (100000):

[tex]\[ 100000 - 99999 = 1 \][/tex]

Therefore, the difference between the largest 5-digit number and the smallest 6-digit number is [tex]\(1\)[/tex].

So, the answer is [tex]\(1\)[/tex].