Click the Equation button -- represented by Pi symbol -- on the Ribbon. First of all open the document that you want to insert a math equation into and place your mouse pointer where. How to Insert Equations in Microsoft Word Method 1of 5.
Tap Home and select Insert.
Tap Home and select Insert. After you insert the equation the Equation Tools Design tab opens with symbols and structures. Go to Insert tab find Symbols group and click Equation button. In the Manage box click Templates and then click Go.