The "sum" is the result of adding something together, and "digits" refers to the individual
numbers that make up 10.|
10 has 2 digits. The digits in 10 are 1 and 0.
When you are asking for the sum of the digits of 10, you are basically asking what is
1 plus 0?
Therefore, the sum of the digits in 10 is as follows:
1 + 0 = 1
Sum of digits in 11
See if you can calculate the sum of the digits in the next number on our list before you go here.