Interesting question. Math can be utilized in karate in many different ways. As far as literal math (i.e. addition, subtraction, multiplication, algebra etc.) there may not be as many examples, but math is seen in karate with the use of angles. When sparring, the use of angles is vital. How a fighter angles their body and strikes on their opponent can be the determining factor in victory or loss. So often in training you will hear comments affiliated with math like "your block is at a 45 degree angle". Math may not be obvious in karate, so its all about reading in between the lines.
Karate is used in math by measuring. Karate measures the length of each stance, and the degrees of each kick and turn. it uses length, height, degrees and distance. Instructors typically are running a business, which means keeping the complete accounting of all the money received and the bills that have to be paid.
You have karate to use as a self defense system.
Karate does not use weapons. Many karate schools also teach kobudo, which is the use of weapons, and have failed to keep the distinction between the two arts.
Ninjas don't use karate or Kung fu. They use ninjutsu.
To run a karate school involves a budget, which is the money associated with paying for the location, services and instructors and the money collected from the students. Determining the cost of lessons requires the teacher to figure out how much everything costs and making it add up to a profit.
i go to karate lesson a Monday and Thursday night and my sister goes to karate on a Friday and a Wednesday morning.
You use it in Sparring.
karate means open hand... so open hand use no weapons
defend ourself
Self Defense
There really is no equivalent word for karate. Many will use the style of karate, such as Shidokan or Shotokan or Isshinryu, but that is a sub-set of karate rather than saying the same thing. And karate is a sub-set of martial arts, so that is not the same.
UFC is not the same a karate. UFC is a Mixed Martial Art. Some of the UFC fighters have trained in karate and put the skills to use in the ring.