"The Meaning and Nature of Fractions" PPT courseware

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"The Meaning and Nature of Fractions" PPT courseware

The numerator is equivalent to the dividend in division, and the denominator is equivalent to the divisor in division. Therefore, the numerator and denominator are multiplied or divided by the same number (except zero) at the same time, and the size of the fraction remains unchanged.

Why should zero be excluded when the numerator and denominator are both multiplied or divided by the same number?

Because the numerator and denominator of a fraction are both multiplied by 0, the fraction becomes ( ). The denominator in a fraction cannot be 0, so the numerator and denominator of a fraction cannot be multiplied by 0 at the same time. And because zero cannot be used as a divisor in division, the numerator and denominator of a fraction cannot be multiplied by 0. The denominator cannot be divided by 0 at the same time.

Do you know why Afanti laughs? What did he say to the three brothers?

An old man gave a piece of land to his three sons. The eldest child was assigned ( ) of this land, and the second child was assigned ( ) of this land. The old three came to this place ( ). The eldest and second child felt that they were at a disadvantage, so the three of them started to quarrel. Afanti happened to pass by, and after asking about the reason for the quarrel, he laughed and said a few words to them, and the three brothers stopped quarreling.

Think about it:

(1) How many fractions are equal to ( )?

Imagine dividing the square paper in your hand infinitely. How many fractions equal to ( ) can be obtained?

(2) Which number is larger ( ) or ( )? Can you tell me the basis for your judgment?

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"Comparison of Fractions" The Meaning and Nature of Fractions PPT Courseware Learning Objectives 1. Require everyone to further understand the meaning of common fractions. 2. Students must master the method of comparing fractions and be able to skillfully convert fractions with different denominators into their equal fractions with the same denominator and compare...

"Tongfen" PPT courseware 4 on the meaning and nature of fractions:

"Common Fractions" The Meaning and Properties of Fractions PPT Courseware 4 Compare the following fractions and tell your reasons: For two fractions with the same denominator, the fraction with the larger numerator is larger. For two fractions with the same numerator, the smaller the denominator, the larger the fraction. Convert fractions with different denominators into sums..

"Tongfen" PPT courseware 3 on the meaning and nature of fractions:

"General Fractions" The Meaning and Properties of Fractions PPT Courseware 3 Compared with the fraction with the denominator, the larger the numerator, the larger the fraction. Compared with the numerator fraction, the smaller the denominator, the larger the fraction. Like this, converting fractions with different denominators into fractions with the same denominator that are equal to the original fraction is called...

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Update Time: 2024-09-22

This template belongs to Mathematics courseware People's Education Press fifth grade mathematics volume 2 industry PPT template

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