How to calculate the sum of all values in a dictionary excluding the first item's value?

Question

I have a dictionary of (string, decimal) and need to calculate the sum of all the Values (decimal values) starting from the second item. Is it achievable using LINQ?

Answer 1

Very achievable using LINQ:

myDict.Skip(1).Sum(x => x.Value); 

However, the standard Dictionary class doesn't guarantee ordering of items, so the "first" item can be anything.

Answer 2

Why not just sum them all up, then subtract the first item?

myList.Sum(x => x.Value) - myList.First().Value;