1. 1. 1 the significance of fractional division

Knowing the meaning of fractional division, like integer division, is to know the product of two factors and one of them, and the operation of Hill and one factor.

1. 1.2 Fraction divided by integer

You should know that the score divided by an integer (except 0) is equal to the score multiplied by the reciprocal of this certificate.

Lesson 2 Elementary Fractional Arithmetic

The order of decimal four operations is the same as that of integers. You can also use the law of integer operation to make the calculation simple.

Lesson 3 Solving Problems

Is to learn to use fractional division to solve application problems.

Lesson 4 Ratio and the Application of Ratio

Significance of 1.4

1. The division of two numbers is also called the ratio of two numbers.

2. In the ratio of two numbers, the number before comparison is called the former item, and the number after comparison is called the latter item. The quotient ratio obtained by dividing the former term by the latter term. Examples; 15 (former): 10 (latter) = 15/ 10=3/2 (ratio)

Basic properties of 1.4.2 ratio

The former term and the latter term of. 1 are multiplied or divided by the same number (except 0) at the same time, and the ratio remains unchanged, which is the basic property of the ratio.

The application of 1 ... 4.3 ratio