"Prime Numbers and Composite Numbers" Factors and Multiples PPT Courseware

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People's Education Press fifth grade mathematics volume 2	pptx	6 MB

"Prime Numbers and Composite Numbers" Factors and Multiples PPT Courseware

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Upload Time: 2024-09-26

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"Prime Numbers and Composite Numbers" Factors and Multiples PPT Courseware

1. Review introduction and reveal topics

What are the factors of 20? What about 81?

Do you remember what factors are? What is a multiple?

In integer division, if the quotient is an integer without a remainder, the divisor and quotient are said to be factors of the dividend, and the dividend is a multiple of the divisor and quotient.

2. Explore new knowledge

Find the factors of each number from 1 to 20.

Look at the number of their factors. What do you find?

A number that has only two factors, 1 and itself, is called a prime number (or prime number). For example, 2, 3, 5, and 7 are all prime numbers.

A number that has other factors besides 1 and itself is called a composite number. For example, 4, 6, 15, and 49 are all composite numbers.

3. Application of knowledge

1. Is the following statement correct? Tell us your reasons.

(1) All odd numbers are prime numbers.

(2) All even numbers are composite numbers.

(3) Among 1, 2, 3, 4, 5,..., except for prime numbers, they are all composite numbers.

(4) The sum of two prime numbers is an even number.

2. Fill in the following numbers into the designated circles.

27 37 41 58 61 73 83 95

11 14 33 47 57 62 87 99

4. Assign homework

Homework: Exercise 3 on page 16, questions 3 and 6.

Keywords: Factors and Multiples courseware, Prime Numbers and Composite Numbers courseware, New People's Education Edition fifth-grade mathematics PPT courseware volume 2, Fifth-grade mathematics slide courseware download, Factors and Multiples PPT courseware download, Prime Numbers and Composite Numbers PPT courseware download, .ppt format

For more information about the PPT courseware "Factors and Multiples Prime Numbers and Composite Numbers", please click the Factors and Multiples ppt Prime Numbers and Composite Numbers ppt tag.

"Prime Numbers and Composite Numbers" Factors and Multiples PPT Courseware 4:

"Prime Numbers and Composite Numbers" Factors and Multiples PPT Courseware 4 Fill in the blanks: (1) A number has no other factors except ( ) and its ( ). This number is called a ( ) number. (2) In addition to ( ) and its ( ), a number has other factors. This number is called (..

"Prime Numbers and Composite Numbers" Factors and Multiples PPT Courseware 3:

"Prime Numbers and Composite Numbers" Factors and Multiples PPT Courseware 3 For each of the following numbers, which ones are prime numbers and which ones are composite numbers. 17 22 29 35 37 87 Prime numbers within 100 Table 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 5...

"Prime Numbers and Composite Numbers" Factors and Multiples PPT Courseware 2:

"Primes and Composite Numbers" Factors and Multiples PPT Courseware 2 In the content "Multiples and Factors", what numbers are we studying? Non-zero natural numbers. What are even numbers and odd numbers? How are they divided? A number is divided according to whether it is a multiple of 2, such as...

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Factors and multiples ppt Prime numbers and composite numbers ppt

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"Prime Numbers and Composite Numbers" Factors and Multiples PPT Courseware