1, trial quotient: try the quotient of the division formula of dividing two digits by two digits first. As follows, we can regard the divisor 2 1 as 20. There were four twenties in' 85. We tried to negotiate 4.

2. Calculation: The division formula is calculated from the maximum value. Dividing two digits by two digits should write the quotient into one digit. If there is a remainder, the remainder is obtained.

? 3. Negotiation under special circumstances. ?

In the following formula, we still take 2 1 as 20. There were four twenties in' 83. The result of our trial operation is 4.

But we will find that the quotient 4 is too big, and we need to adjust the quotient. Change 4 to 3.

Expand knowledge:

1. Use the four-shed method to try the quotient and then learn the quotient adjustment method. You can calculate the number of two digits divided by two digits through the quotient adjustment.

Division is one of the four operations. Given the product of two factors and a non-zero factor, the operation of finding another factor is called division.

3. The division of two numbers is also called the ratio of two numbers. If ab=c(b≠0), the operation of finding another factor A by multiplying the product C and the factor B is division, which is marked as c÷b and pronounced as C divided by B (or B divided by C). Among them, c is called dividend, b is called divisor, and the result of a operation is called quotient.

4. If the quotient of divisor must be an integer, and the divisor and dividend are not factors, there will be a numerical difference, and the difference (D below) is the remainder.