The maximum two digits are 99, and the minimum two digits are 10. The result of subtraction is 99- 10=89. Mathematics is a subject that studies concepts such as quantity, structure, change, space and concept. It usually includes arithmetic, algebra, geometry, probability theory and mathematical statistics.
Arithmetic is the foundation of mathematics, which studies the nature, relationship and operation of numbers. Algebra is a subject that studies the properties and operations of algebraic objects, including concepts such as groups, rings and fields. Geometry is a subject that studies the concepts of shape, size and position, including plane geometry, solid geometry and analytic geometry.
Mathematics is widely used in daily life and science. It is used to solve various practical problems, such as optimizing resource allocation and predicting future events. It is also used to explore the mysteries of the universe, such as calculating the motion of celestial bodies and simulating natural phenomena.
Learning mathematics needs to master its basic concepts and principles, and can use them to solve practical problems. To learn mathematics well, we need to pay attention to practice and thinking, do more exercises and thinking questions, and constantly improve our mathematical literacy and ability.
The benefits of learning mathematics:
1, enhance logical thinking ability
Mathematics is a rigorous discipline with strong logic. Learning mathematics requires us to master reasoning and problem-solving skills, which helps us to enhance our logical thinking ability and reasoning ability. By solving mathematical problems, we can learn to analyze problems, find out laws, and use theorems and formulas to gradually derive answers. This improvement of logical thinking and reasoning ability is not only helpful for learning mathematics, but also can be applied to other disciplines and daily life.
2, improve the ability to solve problems
Mathematical problems usually require us to use mathematical knowledge, skills and ways of thinking to solve them. Learning mathematics can help us improve our problem-solving ability and cultivate innovative thinking and creative problem-solving ability.
By studying mathematics, we can learn to solve practical problems by mathematical methods, such as solving prediction and decision-making problems by statistics and probability methods, and solving space geometry problems by geometry methods. This problem-solving ability is not only helpful to study, but also can be applied to real life and future work.
3. Cultivate mathematical literacy
Mathematics literacy is one of the necessary literacy in modern society. Learning mathematics can help us cultivate mathematical literacy, including the understanding, application and expression of mathematical language, symbols and charts.
Mathematics literacy is not only helpful to study and work, but also to our daily life, such as understanding the figures in financial reports and making personal financial planning. By studying mathematics, we can not only better understand and apply mathematical knowledge, but also better understand and apply various mathematical symbols, languages and tools in modern society.