"Understanding, Reading and Writing of Numbers Within 100 Million" PPT courseware for understanding larger numbers

Description

"Understanding, Reading and Writing of Numbers Within 100 Million" PPT courseware for understanding larger numbers

teaching objectives

1. Combined with specific examples, experience the process of understanding digital tables and reading and writing numbers within 100 million.

2. Recognize the sequence of numbers within 100 million, know the meaning of the numbers in each digit, and be able to read and write numbers within 100 million.

3. Be interested in things related to large numbers in real life, and understand the role of large numbers in expressing and communicating information.

situation creation

Read it.

The distance from my country's Antarctic Great Wall Station to Beijing is approximately 17,500 meters.

The average distance between the Earth and the Moon is approximately 384,402 kilometers.

Let’s talk about the characteristics of these two data.

Explore new knowledge

In the tens of thousands place, it means 10,000.

In the units position, it means 1.

Class summary

In conclusion

The counting units for numbers within 100 million are one (one), ten, one hundred, one thousand, ten thousand, one hundred thousand, one million, and ten million; arrange the numbers corresponding to these counting units from right to left in numerical order, that is Digit sequence table; different digits in numbers have different meanings.

2. According to our country’s counting habits, starting from the ones, every four digits from the low to the high are divided into levels, namely the one level, the ten thousand level...

Read each of the following numbers.

① No matter how many zeros are at the end of each level, they will not be read.

② If there is a 0 or several consecutive 0s in the middle or in front of each level, only one zero will be read.

Read: three million five hundred and four thousand and eight

Read: one thousand, three hundred and nine hundred

Read: six million two hundred thousand

How to read numbers with two levels?

① Read the ten thousand level first, and then read the one level; ② For numbers in the ten thousand level, you must first read them according to the reading method of a series, and then add the word "ten thousand" at the end; ③ No matter how many 0s are at the end of each level, Neither is read; ④ If there is a 0 or several consecutive 0s in the middle or in front of each level, only one zero is read.

Consolidate application

1. Read the results of the two censuses in the four municipalities in my country.

(1) Use a calculator to calculate the population changes in the four cities and fill in the table.

(2) Sort the 2000 census results of the four cities from most to least.

30,904,500 people > 16,737,700 people > 13,819,000 people > 10,008,800 people

(3) Sort the 2010 census results of the four cities from least to most.

12938224 people＜19612368 people＜23019148 people＜28846170 people

2. Write the number on the horizontal line below.

In 2010, 104,457 kilometers of new roads were built nationwide, and in 2011, 55,285 kilometers of new roads were built.

Writing: 104457

Writing: 55285

In 2000, there were 6,257,300 privately owned cars in my country, and in 2010, the number of privately owned cars increased to 65,390,000.

Writing: 6257300

Writing: 65390000

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For more information about the PPT courseware "Knowing the Recognition, Reading and Writing of Larger Numbers Within Hundreds of Millions", please click the Recognition, Reading and Writing of Larger Numbers Within Hundreds of ppt ppt tag.

File Info

Update Time: 2024-10-05

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

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