Law of integer division:

1. One digit divided by two digits (the digits of the dividend can be divisible by the dividend). Divide the digits of dividend by one digit, write the quotient on the digits of dividend, divide the digits of dividend by one digit, and write the quotient on the digits of dividend.

2. When the division is calculated vertically, write the quotient on the divisor, except where it goes.

The law of fractional division in which divisor is decimal;

1) First look at how many decimal places the divisor has, and then move the decimal point of the divisor by a few places to the right. If it is not enough, use zero to make up the digits.

2) Then divide by the fractional division of integer divisor.

Division rule of fractions:?

1) The numerator of the dividend is multiplied by the denominator of the divisor as the numerator.

2) The denominator of the dividend is multiplied by the numerator of the divisor as the denominator. (that is, the dividend is constant, the reciprocal of multiplication and division).

When a two-digit number is divided by a number, it should be divided from the highest number, and the quotient should be written on that number. If there is a remainder after finding the quotient of one bit, then the remainder should be combined with the number falling from the divisor to continue the division.

A divider is the division of two digits. First, try to divide the first two digits of the dividend by the divisor. If the first two digits are less than the divisor, divide the first three digits. Write quotient except dividend; For each quotient, the remainder must be less than the divisor.