"Least Common Multiple" The meaning and properties of fractions PPT courseware 3

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"Least Common Multiple" The meaning and properties of fractions PPT courseware 3

Example: Write down several multiples of 4 and several multiples of 6 in sequence. Which multiples do they have in common? What is the smallest of them?

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

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

The common multiples of several numbers are called the common multiples of these numbers, and the smallest one among them is called the least common multiple of these numbers.

Do two numbers have the greatest common multiple?

Because the number of multiples of every number is infinite, the number of common multiples of two numbers is also infinite. Therefore, there is no maximum multiple of two numbers.

How many common multiples of 6 and 8 are within 50? What's the biggest?

There are 2 common multiples of 6 and 8 within 50: 24 48

If a range is given, the greatest common multiple exists

Summary To find the least common multiple of two numbers, first use the common prime factors of the two numbers to divide continuously (usually starting from the smallest one) until the obtained quotient is a relatively prime number, and then add all the divisors and the last two The merchants multiply together.

Judgment The product of two numbers must be a common multiple of the two numbers. ( )

The product of two numbers must be the least common multiple of the two numbers. ( )

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"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..

"Common Multiples and Least Common Multiples" Common Multiples and Common Factors PPT Courseware 2:

"Common Multiples and Least Common Multiples" Common Multiples and Common Factors PPT Courseware 2 Teaching Objectives 1. In specific operational activities, recognize common multiples and least common multiples, and be able to represent the multiples of two numbers and their common multiples respectively in the set diagram. 2. Learn to use the enumeration method to find...

"Common Multiples and Least Common Multiples" Common Multiples and Common Factors PPT Courseware:

"Common Multiples and Least Common Multiples" Common Multiples and Common Factors PPT Courseware Teaching Objectives 1. Recognize common multiples and least common multiples, and be able to represent the multiples of two numbers and their common multiples respectively in the set diagram. 2. Able to use enumeration methods to find common multiples of two numbers within 10..

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Update Time: 2024-11-02

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