The "sum" is the result of adding something together, and "digits" refers to the individual
numbers that make up 87.
87 has 2 digits. The digits in 87 are 8 and 7.
When you are asking for the sum of the digits of 87, you are basically asking what is
8 plus 7?
Therefore, the sum of the digits in 87 is as follows:
8 + 7 = 15
Sum of digits in 88
See if you can calculate the sum of the digits in the next number on our list before you go here.
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