"Characteristics of Multiples of 2 and 5" Multiples and Factors PPT Courseware

Description

"Characteristics of Multiples of 2 and 5" Multiples and Factors PPT Courseware

teaching objectives

1. Experience the process of independently exploring the characteristics of multiples of 5 and 2.

2. Knowing the characteristics of multiples of 2 and 5, you can determine whether a natural number is a multiple of 2 or 5.

3. Actively participate in exploration activities, be willing to communicate the conclusions you have discovered with your classmates, and try to describe the characteristics of multiples of 2 and 5 in words.

review review

Among the natural numbers from 1 to 50, find the multiples of 4 and 6 respectively.

1. Among the natural numbers from 1 to 100, find all the multiples of 5 and circle them with a red pen; find all the multiples of 2 and circle them with a purple pen.

What are the characteristics of multiples of 5? What are the characteristics of multiples of 2?

Characteristics of multiples of 5: the units digit is 0 or 5.

Characteristics of multiples of 2: The units digit is 0, 2, 4, 6, 8.

A number is both a multiple of 2 and a multiple of 5. What are the characteristics of this number?

A number with 0 in the ones place is both a multiple of 2 and a multiple of 5.

In conclusion

1. Characteristics of multiples of 5: Numbers whose units digit is 0 or 5.

2. Characteristics of multiples of 2: numbers with units digits of 0, 2, 4, 6, and 8.

3. Characteristics of multiples of 2 and 5: numbers with 0 in the ones digit.

4. To determine whether a natural number is a multiple of 2, just look at whether the ones digit of the number is 0, 2, 4, 6, or 8; to determine whether a natural number is a multiple of 5, just look at whether the ones digit of the number is 0, 2, 4, 6, or 8. 0 or 5.

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

2. Fill in the following numbers in the appropriate circles.

3. A 30-page picture album. When you open it, you will see two page numbers. In the middle of the period, one of them is a multiple of 2 and a multiple of 5. Think about it: What two pages might be open?

4. Select three of the number cards below and form a three-digit number as required.

(1) Multiples of 2: 560 650 570 750 670 760 506 706 576 756

(2) Multiples of 5: 560 650 570 750 670 760 605 705 675 765

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Update Time: 2024-11-22

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

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