well, if you're trying to add numbers together, they would all have to be number types.
i.e. if you want 1 + 1 = 2, those are number types. If 1 + 1 = 11, that's text.
Here's a screenshot from the Survey123 documentation showing the syntax to use in your calculation to make sure they are all number types.
If you still have questions, sharing some screenshots of your XLS form might be helpful!
Best,
Katie
“The goal is not simply to ‘work hard, play hard.’ The goal is to make our work and our play indistinguishable.”
- Simon Sinek