Introduction
Formulas in Excel automatically calculate results based on the data you enter. This saves time and reduces errors by updating answers instantly when numbers change.
When you want to add up a list of expenses and see the total update as you add more items
When you need to calculate the average score of students and want it to change if scores are corrected
When you track sales and want the commission to update automatically as sales numbers change
When you want to subtract costs from income to see profit without recalculating manually
When you want to multiply quantities by prices to get total costs that update with any change