"Properties of Decimals" The meaning and properties of decimals PPT courseware 2

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"Properties of Decimals" The meaning and properties of decimals PPT courseware 2

1. Create a situation

Question: What can you learn from this information?

Summary: According to the needs of life, when we record data, some decimals have "0" at the end, and some decimals do not have "0" at the end.

2. Explore ways to simplify decimals

(1) Through data comparison, feel that decimals can be simplified

Questions: 1. How do you feel when you see this set of data?

Default: three data sizes are equal.

2. Since they are equal in size, which one would you like to write? Why?

3. Can 0.700000 and 0.70 be written simpler? Default: 0.70=0.7

(2) Try independently and explore ways to simplify decimals

Questions: 1. Can you use the method just now to write this number simpler? Default: 105.0900=105.09

2. In decimals, can other 0s be removed except the 0 at the end?

Summary: By removing the 0 at the end of a decimal, you can write the decimal into a simple form. This process is called simplification.

3. Explore the method of rewriting decimals

(1) Put forward research questions based on the reality of life

question:

1. Since decimals can be simplified, it is most convenient for us to use such simple decimals in our lives. But I discovered such a thing when I went to the bookstore to buy books.

2. Why is the simplest decimal not used in the shopping receipt?

(2) Try independently and explore ways to rewrite decimals

Questions: 1. Can they be rewritten into decimals with three decimal places? What is the basis?

2. How many zeros are added after them?

3. Do you directly add three zeros after the integer 3? Where is the decimal point of 3?

4. Assign homework

Homework: Exercise 10, Question 4 on page 41.

Keywords: Courseware on the meaning and properties of decimals, PPT courseware for the second volume of the fourth grade of the New People's Education Press, fourth grade mathematics slide courseware download, PPT courseware download on the meaning and properties of decimals, .ppt format

For more information about the "The Meaning and Properties of Decimals" PPT courseware, please click the "The Meaning and Properties of Decimals" ppt tab.

"Properties of Decimals" The meaning and properties of decimals PPT courseware 4:

"Properties of Decimals" The Meaning and Properties of Decimals PPT Courseware 4 Teaching Objectives In this lesson, we mainly study the properties of decimals. Students must initially understand the properties of decimals through group cooperative learning; be able to use the properties of decimals to simplify correctly and rewrite decimals. 0...

"Properties of Decimals" The meaning and properties of decimals PPT courseware 3:

"Properties of Decimals" The meaning and properties of decimals PPT courseware 3 Teaching objectives 1. Knowledge objectives: Preliminarily understand the properties of decimals through group cooperative learning; be able to use the properties of decimals to correctly simplify and rewrite decimals. 2. Ability goal: Cultivate everyone to use flexibly...

"Properties of Decimals" Decimal PPT Courseware 3:

"Properties of Decimals" Decimal PPT Courseware 3 Teaching Objectives In this lesson we mainly study the properties of decimals. Students will understand and master the properties of decimals based on actual examples and be able to solve related practical problems. 1. Simplify 0.70 and 105.0900 0.70= ( ) 105..

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Update Time: 2024-09-28

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