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Authoritative PPT Summary
"Division of Rational Numbers" Rational numbers and their operations PPT download
Part One: Learning Objectives
1. Understand the division rules of rational numbers and be able to perform division operations of rational numbers.
2. Understand the relationship between division and multiplication, and be able to find the reciprocal of a number.
3. Cultivate students’ observation, induction, generalization and calculation abilities.
Division of rational numbers PPT, part 2: problem situation
(-12)÷(-3)＝
Dividend = divisor × quotient
(-3)×4 =-12
(-12)÷(-3)＝_____
Division of rational numbers PPT, part 3: study guide
Self-learning
Preview mathematics textbook P55-P56
1. Think about it and complete the rules
2. Study Example 1, understand the rules, and summarize the steps
3. After doing it, what conclusion can you get?
4. Study Example 2 and summarize the steps
think about it
(-18)÷6=____
5÷(-1/5)=____
(-27)÷(-9)=___
0÷（-2）＝____
Observing the above formula and calculation results, what did you find?
Rational number division rules
When dividing two rational numbers, the numbers with the same sign will be positive, and the numbers with different signs will be negative, and the absolute values will be divided.
0 divided by any number other than 0 is 0.
Note: 0 cannot be used as a divisor.
Division of rational numbers PPT, Part 4 content: Class summary
1. Division rule:
When dividing two rational numbers, if they have the same sign, they will be positive, if they have different signs, they will be negative, and divide the absolute value;
0 divided by any non-zero number is 0.
Note: 0 cannot be used as a divisor.
2. The relationship between division and multiplication:
Dividing by a number is equal to multiplying by the reciprocal of that number.
Homework: Exercise 2.12 Knowledge and Skills 1 (odd number)
Knowledge and skills 2
Problem solving 4
Keywords: Beijing Normal University edition seventh-grade mathematics PPT courseware free download, division of rational numbers PPT download, rational numbers and their operations PPT download, .PPT format;
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"Division of Rational Numbers" Rational numbers and their operations PPT:
"Division of Rational Numbers" Rational Numbers and Their Operations PPT Part One Content: Knowledge Points Basic Knowledge Point 1 Find the reciprocal of a number 1. (Adapted) -The reciprocal of 1/6 is (A) A.-6 B.6 C.- 1/6 D.1/6 2. Which of the following statements is correct (D) A. Negative numbers are not reversed..
"Division of Rational Numbers" Rational Numbers PPT courseware:
"Division of Rational Numbers" Rational Numbers PPT Courseware Part One Content: Introduction of New Knowledge Questions Introduction When we learned the subtraction of rational numbers earlier, we used the inverse operation to convert it into addition. Everyone knows that the inverse operation of division is multiplication, so the rational numbers of..
"Division of Rational Numbers" Rational Numbers PPT:
"Division of Rational Numbers" Rational Numbers PPT Part One Content: New Lesson Introduction When we learned the subtraction of rational numbers earlier, we used the inverse operation to convert it into addition. Everyone knows that the inverse operation of division is multiplication, so the division of rational numbers Is the operation...