Plus Minus Icon in Material Style

This Plus Minus icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 4,400 icons, all in the same style and quality.
This is a logo of a mathematical addition, or plus, symbol. Directly underneath this is the mathematical symbol for substraction, or minus. These symbols are often used in calculations.

Idea of Plus Minus Icon by Wietse Sas

We've received the idea on October 30, 2012 and created the icons on January 16, 2013

- plus - minus - plus-minus - percentage - square root, ...