The ability to process numbers is a sign of an intelligent brain. It indicates that the brain's quantity processing region is well pronounced and fully contributes to making several mathematical calculations possible. Since mathematical fluency is necessary to pass IQ tests and those tests that confirm competence appropriate to the level, this trait is a good determinant of a person's intelligence. According to a study on reading fluency and arithmetic, researchers found that this aspect is also crucial for developing cognitive skills.
Therefore, a person who is proficient in computing is perceived as an intelligent being and is often considered a role model. A person good at mathematics can correctly measure height and distance as similar parameters and make well-informed decisions. The process of developing mathematical skills depends entirely on the logic with which information can be derived from the data provided. It can be said that a person is fluent in mathematics or is good at mathematics when they find the answer to a problem more quickly, or analyze things as needed.
I wish I had tried harder, but I'm starting right now (in fact, I started 4 months ago, I got an A in trigonometry). I want to get a major in mathematics and finish 2 classes in general physics. I'm now in college and my first major choice was civil engineering, and I dropped out because I wasn't sure of my math skills. Yes, I only cry for the degree in mathematics because my father has a doctorate and teaches mechanical engineering.
Just being good at math and lacking reading and writing skills cannot be called complete intelligence. It's where a math genius may lack or need a companion to complement him to carry out life's activities. Research on the relationship between analytical thinking and skills to solve mathematical problems confirms that a person with strong mathematical ability uses analytical powers to carry out several steps in the process. Studies on cognitive and neural correlations and mathematical talent also point to the fact that fluency in mathematics can be the result of practice and the choice of strategies.
Hence the answer to the question: “Is being good at math a sign of intelligence?” it's... In part, yes. It was a blow to my self-esteem. My father is a professor of mechanical engineering at my university and I thought (erroneously) that mathematics would hit me as much as it would hit him.
I'm learning the hard way that he probably beat the shit out of himself to get to where he is now.