"Use ten thousand or billion as units to express numbers" PPT courseware for understanding numbers above ten thousand

Description

"Use ten thousand or billion as units to express numbers" PPT courseware for understanding numbers above ten thousand

Our country has a vast territory, with a total sea and land area of ​​approximately 12.6 million square kilometers and a total land area of ​​approximately 9.6 million square kilometers. It has a large population. The total population in 2008 was approximately 1300 million.

Express numbers using units of tens of thousands and billions

12.6 million square kilometers 12.6 million square kilometers

9.6 million square kilometers 9.6 million square kilometers

1300000000 people 1.3 billion people

Rewrite the following numbers into numbers using "ten thousand" or "hundred million" as units.

7500000000 48900000

7500000000=7.5 billion

48.9 million = 48.9 million

The way to rewrite a whole number into a number with the unit of "ten thousand" is to remove the four "0"s on the scale and add the word "ten thousand". The way to rewrite a whole hundred million number into a number with "hundred million" as the unit is to remove the eight "0"s on the one level and the ten thousand level and add the word "hundred million".

Omit the mantissa after the tens of thousands or billions digit and find the approximate number: first look at the number in the thousands or tens of millions digits. If it is less than 5, just directly round off the mantissa after the tens of thousands or billions digit, and then write the count The unit is "10,000" or "100 million". , if it is equal to or greater than 5, while discarding the mantissa after the tens of thousands or billions digit, add 1 to the tens of thousands or billions digit, and write the counting unit "ten thousand" or "hundred million" at the end.

Keywords: courseware for understanding numbers above ten thousand, use tens of thousands or billions as units to express numbers, download the fourth-grade mathematics PPT courseware for the Western Normal University edition, download courseware for fourth-grade mathematics slideshows, download PPT courseware for understanding numbers over ten thousand, use Download the PPT courseware for expressing numbers in units of tens of thousands or billions, in .PPT format;

For more information about the PPT courseware "Understanding Numbers Above Ten Thousands and Using Ten Thousands or Hundreds of Millions as Units to Express Numbers", please click the "Understanding Numbers Above Tens of Thousands ppt Using Ten Thousands or Hundreds of Millions as Units to Express Numbers" ppt tag.

"Using tens of thousands or billions as units to express numbers" PPT courseware for understanding numbers above tens of thousands: 2:

"Using Ten Thousand or Billion as Units to Express Numbers" Understanding Numbers Above Ten Thousand PPT Courseware 2 Teaching Objectives In this lesson, we will learn to use ten thousand and billion as units to express numbers. Students must master how to use ten thousand and billion as units to express a number. , on this basis, learn to use the rounding method to find a...

File Info

Update Time: 2024-10-18

This template belongs to Mathematics courseware Western Normal University Edition Fourth Grade Mathematics Volume 1 industry PPT template

Preview