Plus minus sign with the key combination insert
- Make sure that the "Num lock" key on your keyboard is active.
- Now enter the key combination "Alt + 0177" at the desired location in your Word document.
Integrated symbol table, use
If you have on your keyboard with no number pad, you can select the plus or minus sign using the character table of the Word.
- In the menu go to the "Insert" button and then on "Symbol" > "More symbols"
- Select the already in the document, Font used, and change the Subset to "Latin-1 (Supplement)". Here you will also find the plus minus sign.

Character table
For this practice tip you can use Microsoft Word 2013 has been used. Other helpful instructions for Word find you here.
