You do need to learn some math and use it while on the job. However, some people find that, thanks to their training, they can handle doing math in the electrical trade even though they weren't good at math in high school. That's because applying mathematical concepts to practical, real-world situations makes them easier to learn. Plus, many electrician schools offer extra tutoring through instructors or peers. So you can always ask for help if you encounter concepts that are hard to understand. Electricians primarily use simple arithmetic, geometry, trigonometry, and algebra in their jobs. They need to know basic concepts from those mathematical branches in order to carry out routine tasks such as: Taking measurements, Converting between different units of measurement, Calculating precise angles, Figuring out the voltage, current, or resistance of an electrical circuit, Calculating the amount of power being supplied by an electrical source.