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Category | Format | Size |
---|---|---|
Jiangsu Education Edition Fourth Grade Mathematics Volume 1 | pptx | 6 MB |
Description
"Finding Approximate Numbers" Number Recognition PPT Courseware 2
The quantity of some things in life is sometimes not expressed by an exact number, but only by a number that is relatively close to it. Such a number is an approximate number.
Determine which of the following numbers are exact and which are approximate?
(1) There was a storytelling session with two students in our class.
(2) There are approximately 60,000 primary school students in Changshu City.
(3) "Bosideng" donated 500,000 yuan to Luotian County, Hubei Province, an old revolutionary base, to build a new Hope Primary School.
(4) The "Bosideng" brand value is approximately 10.2 billion yuan.
discuss:
1. What symbol is used to connect the approximate number with the original number?
2. What is rounding?
3. How to use rounding method to find approximate numbers?
1. First read the numbers on the horizontal line below, and then tell which numbers are approximate.
(1) There are 1,439 students in the experimental primary school.
(2) By the end of 2004, there were approximately 62,000 hospitals and health centers across the country.
(3) The total length of the Shanghai-Nanjing Expressway is approximately 274 kilometers, with an investment of nearly 6.2 billion yuan.
2. Omit the mantissa after the highest bit to find an approximate number
Omit the mantissa after the highest digit of each number below, and then write the approximate number.
705 3855 1994 3208 9775
Keywords: courseware for finding the size of approximate numbers, download the Jiangsu Education Edition mathematics PPT courseware for the first volume of fourth grade, download courseware for fourth grade mathematics slides, download PPT courseware for finding the size of approximate numbers, .PPT format;
For more information about the PPT courseware "Recognizing Numbers and Finding Approximate Numbers and Sizes", please click the "Recognizing Numbers and Finding Approximate Numbers and Sizes" ppt tag.
"Finding Approximate Numbers" Number Recognition PPT Courseware:
"Finding Approximate Numbers" PPT Courseware Teaching Objectives In this lesson, we will learn to find approximate numbers. Through some examples, students must understand what is an exact number and what is an approximate number, know how to use rounding to find the approximate number of a number, and Able to solve practical problems. ..
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Update Time: 2024-10-17
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