1, two numbers can be added directly. For example: 3+5=8. When two numbers are subtracted, they can be subtracted directly. For example: 8-3=5. Multiply two numbers, you can multiply two numbers. For example: 2×3=6.

2. When two numbers are divided, you can divide one number by the reciprocal of the other. For example: 6÷3=2 (because the reciprocal of 3 is 1/3). Other operations, such as mixed operations, can first calculate the numbers in brackets, then multiply and divide, and finally add and subtract. For example: (2+3)×4=20 division with remainder, which can be ignored or added to quotient.

3. For example, 10÷3=3 (the remainder is 1). The above is a common example of the fourth grade math number problem, and the specific problem needs to be calculated according to the requirements of the problem.

Advantages of learning mathematics

People who are good at math are relatively smart and savvy, and they can show their advantages in dealing with people. The faster you think, the more ways and ideas you have. Mathematics is the foundation of other disciplines, and it is easier for people who learn mathematics well to get into other disciplines. Learning software, computer, finance and other engineering majors is even more handy.

It is used everywhere in life. Nowadays, the society is an information society, and mathematical knowledge is used in financial management and computers. Mathematics can cultivate people's integrity and honesty. Mathematics pays the most attention to convincing people by reasoning, and only believes in the results of logical reasoning. Mathematics can cultivate people's tenacity and courage. Mathematics can cultivate people's overall consciousness. Mathematics can cultivate people's good character.