The number A divided by the number B (except 0) is equal to the reciprocal of the number A multiplied by the number B. When the divisor is less than 1, the quotient is greater than the dividend; When the divisor equals 1, the quotient equals the dividend; When the divisor is greater than 1, the quotient is less than the dividend. Multiply the reciprocal of the divisor by the divisor.

Law of fractional division: Fraction A divided by Fraction B is the reciprocal of Fraction A multiplied by Fraction B, and A/B ÷ C/D = A/B× D/C. 。

Knowledge expansion

Mathematics is usually considered as a difficult and boring subject. However, learning mathematics is very necessary for our daily life and future development. Mathematics plays an important role in both academic and professional life.

First of all, mathematics teaches us logical thinking and problem-solving ability.

Mathematics is a rigorous discipline, which requires us to clearly analyze problems, use logical reasoning and creatively solve difficulties. By studying mathematics, we can not only improve our thinking ability, but also cultivate our logical thinking, so as to better deal with various problems.

Secondly, mathematics is the foundation of other scientific and technological fields.

Whether it is physics, chemistry, economics or computer science, it is inseparable from the support of mathematics. Mathematics provides rigorous methods and tools for these disciplines, helping us to better understand and explain phenomena and deduce new theories and models. Without a solid mathematical foundation, it is impossible to understand and apply important concepts and principles in these disciplines.

In addition, mathematics plays a key role in the development of modern science and technology and engineering.

For example, computer graphics, communication technology and artificial intelligence all depend on mathematical methods and theories. Mathematics provides tools for the modeling and optimization of these technologies, enabling us to design more efficient and reliable systems and algorithms.

Equally important, mathematics is the basis of financial management and investment decisions.

Whether it is personal finance or business investment, mathematics is indispensable. Mathematics can help us calculate interest, investment risk and predict market trends. Only with mathematical knowledge can we make wise decisions and avoid financial risks and losses.

Finally, learning mathematics has cultivated our patience and perseverance.

Mathematics is not an easy subject, and it needs a lot of practice and thinking to really understand and master it. Through mathematics study, we can cultivate the quality of perseverance and hard work, which is very valuable for our study and career development.

To sum up, learning mathematics is very necessary for our daily life and future development.

It not only cultivates our logical thinking and problem-solving ability, but also provides a foundation for other scientific and technological fields, plays a key role in modern science and technology and financial management, and cultivates our patience and perseverance. Therefore, we should attach importance to mathematics learning as a necessary skill to improve comprehensive quality.