The phrase "add a sum of" is correct and usable in written English.
It can be used when referring to the action of including a specific amount or total in a calculation or context.
Example: "To complete the budget, please add a sum of $500 for unexpected expenses."
Alternatives: "include a total of" or "insert an amount of".
How to compete in a mobile space dominated by Google's flavor of Android? 'If you can't beat Android, be Android — but add a bit of special sauce' sums up the thinking here.
To try to stop recalcitrant "moderate" Republicans from fleeing over this part of the deal, lawmakers have added a paltry sum of money to an already meager pot supposed to take care of those sickest, costliest patients.
An alternative form of the consensus averaging-based algorithm is introduced, in which each node iteratively updates its estimate by adding a weighted sum of its own and its neighbors' estimate, with the time-varying weight matrices.
When Cable reveals that "Within a week or so of becoming an MP, I had my first queue at a constituency surgery", he does not add a great deal to the sum of human understanding.
And then when we added it up to get f(x) back again, we added up a sum of the c_k's e^ ikx)'s, right?
This can be done in a coarse grained way by adding up a sum of N previous ISIs and using that as a random variable, which we consider first.
Add in regular sums of incompetence that any new venture could fall prey to, and ICOs feel a bit Old West.
Furthermore, he added, the sums of money are often small and may have unwittingly been spent by the recipient.
Moreover, by shifting money within budgets, nations can create comprehensive programmes for their youngest citizens without adding large sums of money or further depleting their budgets.
In this analysis, we included individual, and side and their interaction terms, and added sums of squares across landmarks and coordinates, assuming equal and isotropic variation at each landmark.
