The sum of two variables is equal to one variable

[Kal_Lam]

@lamo, apart from the support articles you could also have a look at the workaround discussed previously:

How do we use the calculate function in KoBoToolbox to add 2 variables?

Hi @tanzilhuda, You could calculate the average as shown in the image below: In the survey sheet of your xlsform: [image] Reference xlsform: Addition_Average_Calculation.xlsx (9.7 KB)