Division of two numbers is also called the ratio of two numbers. If ab is equal to c(b is not equal to 0), the operation of finding another factor A by the product of C and factor B is division. Write c divided by b and read 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.
Operational nature: the divisor is enlarged (reduced) by n times, and the quotient is correspondingly enlarged (reduced) by n times under the condition that the divisor is unchanged. The divisor is expanded (reduced) by n times, while the dividend is unchanged, and the quotient is correspondingly reduced (expanded) by n times. Dividing by two divisors in succession is equal to dividing by the product of these two divisors. Sometimes simple operations can be performed according to the nature of the division.
The simple method of dividing three digits by two digits (generally classified as follows) is to convert the divisor into an integer ten by using the invariant property of quotient. Using the invariance of quotient, the divisor is converted into a single digit. Simple calculation by using the operational nature of division. Division is one of the four operations. Knowing the product of two factors and one of them, the operation of finding the other factor is called division.