Fill in the blanks: The sum (addition) of the smallest number of three digits and the largest number of two digit =+=.

Finding the smallest number of three digits and the largest number of two digits ​
We know that,​

The smallest number of three digits = 100​

The largest number of two digits = 99​

Finding the sum of the obtained number ​
Sum = 100 + 99 = 199.​

The sum (addition) of the smallest number of three digits and the largest number of two digits = 100 + 99 = 199.​