| Category | Format | Size |
|---|---|---|
| Beijing Normal University Edition Fifth Grade Mathematics Volume 1 | pptx | 6 MB |
"Finding Prime Numbers" Multiples and Factors PPT
Description
"Finding Prime Numbers" Multiples and Factors PPT
Part One: Classroom Introduction
1. In the activity of using small squares to form rectangles, experience the process of exploring prime numbers and composite numbers, and understand the meaning of prime numbers and composite numbers. Able to correctly judge prime numbers and composite numbers.
2. In the process of solving problems, be able to think in an organized manner and compare and summarize the collected information. Learn to express problem-solving thinking methods and results.
3. Enrich the understanding of the development of mathematics in the process of studying prime numbers, so that students can feel the charm of mathematical culture. Able to actively participate in mathematics learning activities.
Finding Prime Numbers PPT, Part 2: Exploration of New Knowledge
What mathematical knowledge do you think of when you see these numbers?
2, 13, 9, 12, 7, 16, 15
Factor: 2 is the factor of 12 and 16.
Multiples: 12 and 16 are multiples of 2.
Even numbers: 2,12,16.
Odd numbers: 13,9,7,15.
I found that except 1, all numbers have two factors: 1 and itself.
Some numbers have other factors besides 1 and itself.
Can you name these numbers based on the number of factors?
A number that has only two factors, 1 and itself, is called a prime number.
A number that has other factors besides 1 and itself is called a composite number.
Explanation: 1 is neither a prime number nor a composite number.
Find Prime Numbers PPT, Part 3: Classroom Exercises
1. Which of the following numbers are prime numbers and which are composite numbers?
1, 6, 49, 13, 64, 19, 25, 44, 59, 28
Which of the 2.1 to 100 are prime numbers?
3. Use 13, 14, 15, and 16 small squares to form several rectangles to complete the table below.
4.Guess who I am.
Our sum is 10
Both of us are prime numbers, and their product is 21.
We are 3 and 7, did you guess it right?
Finding Prime Numbers PPT, Part 4: Class Summary
A number that has only two factors, 1 and itself, is called a prime number.
A number that has other factors besides 1 and itself is called a composite number.
1 is neither prime nor composite.
Finding Prime Numbers PPT, Part 5: Classwork
1. Fill in the blanks
(1) A two-digit number consists of the smallest odd number and the smallest composite number. This number is ( ).
(2) The smallest three-digit number composed of the smallest prime number, the smallest composite number and the smallest odd number is ( ).
(3) The number that is both an even number and a prime number is ( )
(4) The largest prime number within 20 times the largest prime number within 10, the product is ( ).
(5) The largest prime number within 50 is ( ), and the largest composite number is ( ).
2. Determine whether the following numbers are prime or composite.
11 21 50 41 88 83 218 711
Prime numbers: 11 341 83
Total number: 21 50 77 218 711
3. Judgment.
1. A number with only two factors must be a prime number. ( )
2. Even numbers are all composite numbers, and odd numbers are all prime numbers. ( )
3. A natural number is either a prime number or a composite number. ( )
4. All composite numbers must be even numbers. ( )
Keywords: Beijing Normal University edition fifth grade mathematics PPT courseware free download, find prime numbers PPT download, multiples and factors PPT download, .PPT format;
For more information about the "Finding Prime Numbers Multiples and Factors" PPT courseware, please click on the "Finding Prime Numbers PPT Multiples and Factors PPT" tab.
"Finding Prime Numbers" Multiples and Factors PPT teaching courseware:
"Finding Prime Numbers" Multiples and Factors PPT teaching courseware Part One: Review of old knowledge Three rectangles can be made from 12 small squares. ... ... ... Find Prime Numbers PPT, Part 2: Exploring New Knowledge Using 23, 11 small squares, you can...
"Finding Prime Numbers" Multiples and Factors PPT Download:
"Finding Prime Numbers" Multiples and Factors PPT Download Part One: Learning Objectives 1. In teaching activities, help students understand the meaning of prime numbers and composite numbers. 2. Cultivate students’ abilities of observation, comparison, abstraction and generalization. Focus on the activity of using small squares to make rectangles...
"Finding Prime Numbers" Multiples and Factors PPT Courseware:
"Finding Prime Numbers" Multiples and Factors PPT courseware. Recognize it and fill it in. A number that has only two factors, 1 and itself, is called a prime number. A number that has other factors besides 1 and itself is called a composite number. 1 is neither a prime number nor a composite number. ..
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Update Time: 2024-07-06
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