"Finding the Least Common Multiple" PPT download of the meaning of fractions

Description

"Finding the Least Common Multiple" PPT download of the meaning of fractions

Part One: Learning Objectives

1. Be able to use enumeration method and other methods to find the common multiple and least common multiple of two numbers.

2. Understand the meaning of common multiples and least common multiples.

focus

Can use enumeration method and other methods to find the common multiple and least common multiple of two numbers.

difficulty

Understand the meaning of common multiples and least common multiple.

Finding the Least Common Multiple PPT, Part 2: Review and Review

Can you tell me what are the multiples of 5? What is the smallest multiple? What's the maximum multiple?

5, 10, 15, 20, 25... I can’t finish it.

The smallest multiple is: 5

The multiples of a number are infinite and there is no maximum multiple.

Finding the Least Common Multiple PPT, Part 3: Interpretation of Examples

In the table below, multiples of 4 are marked with "○" and multiples of 6 are marked with "△".

Multiples of 4 are: 4,8,12,16,20,24,28,32,36,40,44,48,…

Multiples of 6 are: 6,12,18,24,30,36,42,48,…

Which numbers are marked with both "�" and "△"? What are the characteristics of these numbers?

The numbers with both markings are 12, 24, 36, and 48.

12 is both a multiple of 4 and a multiple of 6.

Finding the Least Common Multiple PPT, Part 4: Typical Examples

[Example 1] Please find the lowest common multiple of each set of numbers below.

3 and 416 and 8

[Example 2] The number of fifth grade students participating in the tree planting activity is between 40 and 50, and they can be divided into groups of 6 or 8. How many students in fifth grade participated in tree planting?

Answer: There are 48 students in fifth grade participating in tree planting.

Finding the Least Common Multiple PPT, Part 5: Summary

How to find the lowest common multiple of two numbers

Method 1: Find the multiples of these two numbers respectively, and then find their common multiple and least common multiple.

Method 2: First find the multiples of a number, and then circle the multiples of another number from this set of numbers in order from small to large. The circled numbers are their common multiples, and the first circled number is their Least common multiple.

Find the least common multiple PPT, part six: quiz in class

1. Judgment.

(1) 16 is a common multiple of 2 and 4. ( )

(2) The common multiple of 5 is 20. ( )

(3) The common multiples of 3 and 5 are only 15 and 30. ( )

2. Find the lowest common multiple of each of the following sets of numbers.

15 and 3018 and 2712 and 15

The least common multiple of 15 and 30 is: 30

The least common multiple of 18 and 27 is: 54

The least common multiple of 12 and 15 is: 60

Finding the Least Common Multiple PPT, Part 7: Homework

1. Select from the after-class exercises;

2. Complete the exercises in this lesson in the exercise book.

Keywords: Beijing Normal University edition fifth grade mathematics PPT courseware free download, find the least common multiple PPT download, the meaning of fractions PPT download, .PPT format;

For more information about the "The Meaning of Fractions to Find the Least Common Multiple" PPT courseware, please click on the "The Meaning of Fractions PPT to Find the Least Common Multiple" PPT tag.

"Finding the Least Common Multiple" PPT teaching courseware on the meaning of fractions:

"Finding the Least Common Multiple" The Meaning of Fractions PPT Teaching Courseware Part One: Review of Old Knowledge Who can give some examples of multiples of 3? How many multiples of 2? 36912151821 24681012141618, 20 Situation introduction Afanti’s story Once upon a time there was a long-term worker...

"Finding the Least Common Multiple" PPT on the meaning of fractions:

"Finding the Least Common Multiple" PPT on the Meaning of Fractions Part One: Review Introduction We have already learned about multiples. Can anyone give some examples of multiples of 3? 3, 6, 9, 12 What about multiples of 2? What is the smallest multiple of 2, 4, 6, 8, 10, 3 and 2? It's themselves...

"Finding the Least Common Multiple" PPT courseware on the meaning of fractions:

"Finding the Least Common Multiple" The Meaning of Fractions PPT Courseware The common multiples of 4 and 6 are 12243648. The least common multiple of 4 and 6 is 12. 1. In the table below, use ○ to mark multiples of 3 and △ to mark multiples of 5. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1..

File Info

Update Time: 2024-11-13

This template belongs to Mathematics courseware Beijing Normal University Edition Fifth Grade Mathematics Volume 1 industry PPT template

Preview