Children's special ability to do quick calculations using the mental arithmetic method.
Abstract Thinking Ability: Children who have strong abstract thinking abilities can quickly understand complex mathematical concepts. They are able to generalize mathematical patterns and apply them quickly.

Visualization: The ability to visually represent a math problem mentally can help children decipher the problem and find a solution quickly.

Patterns and Strategies: Children who excel at rapid calculation often have the ability to identify mathematical patterns and apply appropriate strategies to solve problems efficiently.

Practice and Experience: Practice and experience play an important role in developing quick counting skills. Children who often practice using mental arithmetic methods will become more skilled at calculating quickly.

Concentration Ability: Children's ability to concentrate and focus also has a big impact on their ability to do quick calculations. The ability to focus on complex mathematical problems allows them to solve them quickly.

Interest and Motivation: Children who have high interest and motivation in mathematics tend to be more enthusiastic about developing their quick calculation skills.