Question

How to type the plus sign +

Answer 1

Answer:

you just did it. its on da keyboard

Explanation:

hold shift and click the equal sign

Shift + = = +

Answer 2

Answer:

For Windows and Mac OS

The easiest way would be to open your Character Map.  

Explanation:

Windows: How do I view a Character Map?

To start Character Map and see all the available characters for a particular font, click Start, point to Programs, point to Accessories, point to System Tools, and then click Character Map.

Mac OS: The easiest is to display the Mac OS Characters palette – just press [Command] + [Option] + [T], or [⌘] + [⌥] + [T]. You can then browse through various symbols and special characters, and simply double-click anyone to insert it into your current document.