1, divisor is an integer fractional division calculation rule: divisor is an integer fractional division, which is removed according to the integer division rule, and the decimal point of quotient should be aligned with the decimal point of dividend; If there is a remainder at the end of the dividend, add 0 after the remainder and continue the division. 2. Divisor is a decimal division calculation rule: divisor is a decimal division, first move the decimal point of divisor to make it an integer; The decimal point of the divisor is shifted to the right by several digits, and the decimal point of the dividend is also shifted to the right by several digits (the digits are not enough, and 0 is added at the end of the dividend), and then the calculation is carried out according to the fractional division in which the divisor is an integer. 3. Findings in fractional division: ① When the divisor is greater than 1, the quotient is less than the dividend. For example: 3.5÷5=0.7② When the divisor is less than 1, the quotient is greater than the dividend. For example: 3.5÷0.5=74, and the calculation method of fractional division: ① quotient× divisor = dividend (universal) ② dividend ÷ quotient = divisor.

1. The divisor is the fractional division of an integer.

(1) Remove it first according to the law of integer division;

② The decimal point of quotient should be aligned with the decimal point of dividend;

③ If there is a remainder at the end of the dividend, add 0 to the remainder and continue the division.

2. Dividers are fractional divisions of decimals.

(1) First remove the decimal point of the divisor to make it an integer;

(2) Look at how many decimal places the divisor originally had, and move the decimal point of the dividend to the right by the same decimal place (if the decimal place is not enough, add 0);

(3) Division by divisor is an integer.

Extended data:

First, the relationship between dividend and quotient

1, the dividend is enlarged (reduced) by n times, and the quotient is correspondingly enlarged (reduced) by n times.

2. The divisor is expanded (reduced) by n times, and the quotient is correspondingly reduced (expanded) by n times.

Second, the algorithm of integer division

1. Starting from the highest digit of the dividend, take out the number with the same digit as the divisor (if the number taken out is less than the divisor, take out the number with one digit more than the divisor), and divide by the divisor to get the highest digit of the quotient and the remainder (the remainder may be zero).

2. Turn the remainder into the next unit, add the number on the dividend, and then divide by the divisor (when the divisor is less than this number, the quotient is 0) to get the quotient and the remainder. This continues until all the digits on the dividend are used up to get the final quotient and remainder.