<p>The <b>SUM</b> function is one of the math and trigonometry functions. It is used to add all the numbers in the selected range of cells and return the result.</p>
<br/>or right-click within a selected cell and select the <b>Insert Function</b> option from the menu, or click the <imgalt="Function icon"src="../images/function.png"/> icon situated at the formula bar and select the <b>SUM</b> function of the <b>Math and trigonometry</b> function group,</li>
<li>enter the required arguments separating them by commas or select the range of cells with the mouse,</li>
<li>press the <b>Enter</b> button.</li>
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<p>The result will be displayed in the selected cell.</p>