"Understanding, Reading, and Writing of Numbers Over Hundreds of Hundreds" PPT courseware for understanding larger numbers

Description

"Understanding, Reading, and Writing of Numbers Over Hundreds of Hundreds" PPT courseware for understanding larger numbers

teaching objectives

1. Combined with the population of our country, experience the process of recognizing numbers over 100 million and understand the decimal counting method.

2. Recognize counting units such as billions, billions, tens of billions, and hundreds of billions, as well as digit sequence tables, understand the decimal counting method, and be able to read and write numbers above 100 million.

3. Willing to understand more than 100 million data and information in social life and feel the close connection between mathematics and life.

situation creation

The results of my country’s sixth census in 2010 are as follows:

Count how many people there are in my country's sixth census.

How to read such a large number?

Explore new knowledge

These are called counting units. The positions they occupy are called digits.

10 100 million is a billion, 10 billion is 10 billion, 10 10 billion is 100 billion... Like this, the progress rate between every two adjacent counting units is 10. This counting method is called decimal notation.

Read out the results of my country’s two censuses in 2010 and 2000.

Population in 2010: 13 7053 6875 people

Read: One billion three hundred and seventy-five hundred and thirty-six thousand eight hundred and seventy-five

Population in 2000: 12 9533 0000 people

Read: 1,295,330,000

Class summary

When reading and writing numbers, use the four-digit grading method, from high to low, reading and writing level by level. When reading each level, don't forget to add the counting unit; when writing numbers, except for the highest level, make sure there are four digits in each level.

Consolidate application

1. Fill in the blanks.

There is ( ) one hundred thousand in one million, and there is ( ) one million in ten million. There are ( ) tens of millions in a hundred million, and there are ( ) billions in a billion.

2. Read the data in the table, use a calculator to calculate the changes, and fill in the table.

3. Write each of the following numbers.

3.2 billion

Writing: 32 0000 0000

10.506 billion

Read: 105 0600 0000

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For more information about the PPT courseware "Understanding and Reading and Writing Methods for Understanding Larger Numbers of Hundreds of Millions and Above", please click on the Cognition and Reading and Writing Methods for Understanding Larger Numbers and Numbers of Hundreds of Millions or More ppt tag.

File Info

Update Time: 2024-11-16

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

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