109999. (10000 + 99999)
0
199
0
100000 + 999999 = 1099999
0
The smallest 5 digit integer is -99999. The largest 5 digit integer is 99999. The sum is therefore 0.
0
0
199
100000 + 999999 = 1099999
100,000 + 99,999 = 199,999
100,000 + 999,999 = 1,099,999
0
99999
101117
Smallest 2 digit number is 10. 10 + 99 = 109
Sum = 109 Difference = 89