"Knowledge and Skills" Discovery Park PPT Courseware 4

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"Knowledge and Skills" Discovery Park PPT Courseware 4

Consolidate application

1. Answer the questions and give examples

(1) What is the connection between ratio, fractions and division?

①Ratio, the former term, the ratio sign, the latter term, the ratio

Division Dividend Divisor Divisor Quotient

Fraction numerator fraction line denominator fraction value

②In integer division, the divisor cannot be 0; in fractions, the denominator cannot be 0; in ratios, the consequent of the ratio cannot be 0. It is meaningless for the last term of the divisor, denominator and ratio to be 0.

(2) What is the difference in meaning between ratio and proportion?

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

An expression that expresses the equality of two ratios is called a proportion.

(3) What are the basic properties of ratio? What property is it related to that you have learned?

The basic properties of ratio: If the first and last terms of a ratio are multiplied or divided by the same number (except 0) at the same time, the ratio remains unchanged.

The basic properties of ratios are related to the basic properties of fractions.

Basic properties of fractions: If the numerator and denominator of a fraction are multiplied or divided by the same number (except 0) at the same time, the size of the fraction remains unchanged.

(4) What is the basic property of proportion? What applications does it have in solving mathematical problems?

Basic properties of proportion: In a ratio, the product of two external terms is equal to the product of two internal terms.

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Update Time: 2024-10-04

This template belongs to Mathematics courseware Hebei Education Edition Sixth Grade Mathematics Volume 1 industry PPT template

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