The second grade of primary school will involve four operations, which are addition, subtraction, multiplication and division, including vertical teaching of division. The basic algorithm of division is as follows:

1, divided by the high dividend.

2. How many digits is the divisor? Look at the first few digits of the divisor first. If the divisor is not enough, you need to look at one more digit.

3. Besides which one, which one do you need to write the business on?

4. The remainder of each division must be less than the divisor.

5. After finding the highest bit of the quotient, if there is not enough quotient 1 on the dividend, write 0 on it.

Arithmetic of division:

Integer division starts from the higher order of dividend; How many digits is the divisor? Look at the first few digits of the divisor first. If the divisor is not enough, look at one more digit. In addition to which one, you must write your business on which one; The remainder of each division must be less than the divisor.

When the divisor in decimal division is an integer, it is calculated by integer division, and the decimal point of quotient should be aligned with the decimal point of dividend; When the divisor is decimal, it is first converted into decimal division with the divisor being an integer, and then calculated according to the divisor being an integer.