How can a calculated control be added to a form in Access?

Adding a calculated control to a form in Access is accomplished by using a text box that has its Control Source property set to a calculation expression. This means that you can define the calculation directly within the text box, allowing it to dynamically display results based on data from other fields within the form or from related tables.

To set this up, you would insert a text box into the form design view and then, in the properties pane, specify a formula or expression in the Control Source property. This expression can involve arithmetic operations, functions, or references to other controls on the form. For example, if you want to calculate the total price by multiplying the quantity by the unit price, you could set the Control Source of the text box to something like [Quantity] * [UnitPrice].

This direct approach provides real-time calculations and makes it easy to present derived values to users without having to use separate queries or additional programming, making it an efficient choice for users looking to enhance data interactivity in their forms.