1, the multiplication exchange law is read as "multiplication exchange multiplication", for example, 2*3 is read as "two times three equals six" or "two times three equals six".

2. The law of multiplication and association is read as "multiplication combined with multiplication", for example, (2*3)*4 is read as bracket two times three bracket four equals twelve.

3. The law of multiplication and distribution is read as "multiplication and distribution multiplication". For example, (2+3)*4 is read as bracket two plus three brackets multiplied by four equals twelve.

Math learning methods for the second grade:

1. Establish a correct view of learning: Mathematics is a science, which can make you better understand and grasp the laws and relationships of objective things and make you think better.

2. Finish your homework carefully: The knowledge learned in class is the basis of mathematics learning, so you should finish your homework carefully in order to better understand and master mathematics knowledge.

3. Regular practice: Do more exercises and practice more, better master mathematical knowledge and improve problem-solving ability.

4. Mastering mathematical thinking: Learn to think with mathematical thinking and learn to solve practical problems with mathematical methods, so as to better master mathematical knowledge.

5. Review in time: review in time when learning mathematics, so that what you have learned can be firmly remembered in your mind and improve your learning efficiency.

The importance of mathematics learning;

1, mathematics can exercise our logical thinking ability, make our thinking more agile and our mind more flexible and rational.

2. Learning mathematics can lay a foundation for the study of other disciplines, facilitate better contact with the knowledge of various disciplines, and improve the ability to observe experiments, collect information and accurately calculate lifelong benefits.

3. Daily life is inseparable from mathematics, and the knowledge of mathematics returns to daily life, which helps us solve many difficult problems in life.

Importance of multiplication formula

1, which can simplify the calculation process, so that students don't have to carry out complicated addition, subtraction or multiplication and division operations, thus improving the calculation speed and accuracy. For example, for some complex multiplication problems, if the multiplication formula is used for deformation, the problem that originally required multi-step calculation can be transformed into a simple multiplication problem, which greatly simplifies the calculation process.

2. The multiplication formula is the basis of learning other mathematical knowledge. For example, when studying physics, chemistry and other subjects, you need to use multiplication formulas to do some basic calculations. If you don't master the multiplication formula, you will encounter difficulties in learning these subjects.