The remainder is the remainder produced when the dividend is not divisible by the dividend in integer division. In the division operation of 9.8 divided by 2.9, we can express 9.8 as 98/10 and 2.9 as 29/10. When we divide, we first compare the highest bit of divisor 2.9 and dividend 9.8, which is one bit. Since 8 is less than 9, the first digit of the quotient should be 0, and the first digit of the remainder should be 8.

Shift the divisor right by one bit (that is, divide by 10) to become twenty-nine. This time, the second digit of the remainder should be 1. So the quotient of 9.8 divided by 2.9 is 0, and the remainder is 1. 1. This process can be expressed mathematically as 9.8=2.9×0+ 1. 1. We can see how to calculate the remainder by division.

The remainder is always less than the divisor. For example, if we divide by 3, the remainder can be 0, 1 or 2, but not 3 or more. This is because if the remainder is 3 or more, then we can continue to do division until the remainder is less than the divisor.

The importance of learning division;

1, Basic Mathematics Skills: Division is one of the important skills in basic mathematics, and it is also the basis for learning other mathematics skills. Mastering division is very important for understanding the concepts of advanced mathematics and solving complex mathematical problems.

2, problem-solving ability: division is a basic arithmetic operation, often used in daily life. Learning division is helpful to improve the ability to solve problems, and it is very important to understand the mathematical problems in various practical application scenarios.

3. Understand the concept of fraction: Division is closely related to fraction. Learning division is helpful to understand the concept and operation of fraction, and it is very important to understand the concepts of proportion and percentage and solve related problems.

4. Cultivate logical thinking: Learning division is helpful to cultivate logical thinking, especially to improve abstract thinking ability and reasoning ability. By learning division, we can better understand some basic concepts and principles in mathematics, so as to better solve other mathematical problems.