"Characteristics of Multiples of 3" Multiples and Factors PPT Courseware

Description

"Characteristics of Multiples of 3" Multiples and Factors PPT Courseware

teaching objectives

1. Through observation, calculation, communication and other activities, experience the process of exploring the characteristics of multiples of 3.

2. Know the characteristics of multiples of 3 and be able to judge whether a number is a multiple of 3.

3. In the activity of exploring the characteristics of a number that is a multiple of 2, 3, and 5 at the same time, you can think in an organized manner and develop number sense.

review review

Find the multiples of 2 and 5 in the numbers below.

18 24 25 30 35 36 40

42 45 46 50 65 80 100

Explore the characteristics of multiples of 3.

(1) Complete the following table based on the number of sticks in the table.

(2) Find all multiples of 3 from the natural numbers 10 to 50, add the numbers in the ones and tens places, and fill in the sum in the table below.

Discuss

1. A number is a multiple of 2 and 3 at the same time. What are the characteristics of this number?

This number is an even number, and the sum of the digits in this number is a multiple of 3

2. A number is a multiple of 3 and 5 at the same time. What are the characteristics of this number?

A number whose ones digit is 0 or 5, and the sum of the numbers in each digit of this number is a multiple of 3.

3. A number is a multiple of 2, 3, and 5 at the same time. What are the characteristics of this number?

The number in the ones digit is 0, and the sum of the numbers in each digit of this number is a multiple of 3.

practice

1. First talk about the characteristics of the calculated number of wheels, and then fill in the table.

2. Determine whether each of the following numbers is a multiple of 3.

92 729 643 1029 8215

3. Fill in the appropriate numbers in the boxes below as required.

4. Which numbers should be filled in each box below? Is this number a multiple of 3?

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For more information about the PPT courseware "Characteristics of Multiples and Multiples of Factors 3", please click the Characteristics of Multiples and Factors ppt3 ppt tag.

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File Info

Update Time: 2024-10-04

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

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