"Division of Rational Numbers" Rational Numbers PPT Courseware 3

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"Division of Rational Numbers" Rational Numbers PPT Courseware 3

Review questions:

1. What is the multiplication rule for rational numbers?

2. What is countdown?

3. Find the reciprocal of the following rational numbers.

Thinking: 1. How is division performed in elementary school?

2. What are some examples of dividing two numbers?

Divide a positive number by a positive number 8÷4

Negative numbers divided by positive numbers (-8)÷4

Zero divided by a positive number 0÷4

Divide a positive number by a negative number 8÷(-4)

Negative numbers divided by negative numbers (-8)÷(-4)

Zero divided by a negative number (-8)÷(-4)

Calculate (-4) ÷2,4 ÷(-2),(-4) ÷(-2).

Related to this type of specific number division, do you think a and b are rational numbers, b≠0, do the following formulas hold true? What rules can be summarized from them?

The formulas in (1) and (2) are all true. From them, it can be concluded that if the signs of the numerator, denominator and fraction are changed, the value of the fraction will not change.

summary

1. Master the division rules of rational numbers and be able to perform calculations;

2. Be able to use the division rule to simplify fractions.

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For more information about the PPT courseware "Rational Numbers Division and Rational Numbers", please click the Rational Numbers ppt Rational Numbers Division ppt tag.

"Rational Number Division" Rational Number PPT Courseware 2:

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"Division of Rational Numbers" Rational Numbers PPT Courseware:

"Rational Number Division" Rational Number PPT Courseware Question 1: Xiao Ming walked 50 meters per minute from home to school and walked for 20 minutes. How far is Xiao Ming's home from school? After school, Xiao Ming still walks at a speed of 50 meters per minute. How much should he walk home? Minutes? Rules for dividing rational numbers: divide by one..

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Update Time: 2024-10-19

This template belongs to Mathematics courseware People's Education Press Seventh Grade Mathematics Volume 1 industry PPT template

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