Dropdown sum powerapps

Question

I would like to make a sum of all dropdown values into a label text box.

I am using following formula, but I do not understand where am I going wrong.

Can anyone assist?

I have also added a screenshot if that helps anyhow.

Note: scores is the table name the dropdown values feed from.

Sum(scores, Dropdown3.Selected.Value + Dropdown3_1.Selected.Value + Dropdown3_2.Selected.Value)

Answer 1

Set the Text property of label to:

Sum(Dropdown3.Selected.Value, Dropdown3_1.Selected.Value, Dropdown3_2.Selected.Value)

If data type of selected item value from drop-down is string then use:

Sum(Value(Dropdown3.Selected.Value), Value(Dropdown3_1.Selected.Value), Value(Dropdown3_2.Selected.Value))

Microsoft documentations:

1. Sum function
2. Value function