Word allows you to write out equations right in the text field, as well as find out what the equation’s total is. You only need to set up Calculator.
To do this, go to File Options Quick Access toolbar. Select All commands in the drop-down menu, and scroll down for Calculate. Click on the Add button. You’ll see it appear on your Quick Access toolbar as a small gray circle.
To use it, you only need to type out a mathematical equation. For instance, type out 10+5, highlight your equation, and click on the button. The result appears in the lower left side of the taskbar.

Find more ways to make Word work for you, with a class from AETC.