"Reduction" The meaning and nature of fractions PPT courseware 5

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"Reduction" The meaning and nature of fractions PPT courseware 5

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"Reduction" The meaning and nature of fractions PPT courseware 5

1. Fill in the blanks according to the basic properties of fractions:

16 ( ) 4 ( ) 1

—— = —— = —— = —— = ——

32 16 ( ) 4 ( )

( ) 2 10 ( ) 20

—— = —— = —— = —— = ——

9 3 ( ) 24 ( )

Like this, dividing the numerator and denominator of a fraction by a common factor at the same time, turning it into a fraction that is equal to it (the value of the fraction remains unchanged), but with a smaller numerator and denominator. This process is called reduction.

Like this, the common factor of the numerator and denominator of a fraction is only 1 and cannot be reduced. Such a fraction is called a simplest fraction.

do you know?

In the ancient Chinese mathematics work "Nine Chapters on Arithmetic", the "reduction technique" is introduced: "If half is possible, half is half, and if half is not...", it means: If the numerator and denominator are both even numbers, then first Divide by 2; otherwise... This method is called "phase-changing subtraction technique" by later generations.

Lesson summary:

What is approximation?

What is the simplest fraction?

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For more information about the PPT courseware "The Meaning and Properties of Fractions and Reduction", please click the "The Meaning and Properties of Fractions ppt Reduction ppt" tag.

"Reduction of Fractions" PPT courseware:

"Reduction of Fractions" PPT Courseware Communication and Discovery 1. How is the reduction of fractions performed? Utilize the basic properties of fractions: both the numerator and denominator of the fraction are multiplied or divided by the same number that is not equal to zero, and the value of the fraction remains unchanged. Multiply the upper and lower numbers by the same factor or use common divisors. 2. According to...

"Reduction" PPT courseware on the meaning of fractions:

"About Points" PPT Courseware on the Meaning of Scores Practice 1. In 30 games this season, we won 18, drew 2, and lost 10...

"Reduction" Fraction PPT Courseware 2:

"Reduction" Fraction PPT Courseware 2 Teaching Objectives 1. Understand the common factors and the greatest common factor, and be able to find the common factors and the greatest common factor of two non-zero natural numbers. 2. Know what a coprime number is and be able to determine whether two numbers are coprime. 3. Through active learning and collaboration..

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Update Time: 2024-11-19

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"Reduction" The meaning and nature of fractions PPT courseware 5
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