"Absolute Value and Negative Numbers" PPT courseware

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Hebei Education Edition Seventh Grade Mathematics Volume 1	pptx	6 MB

"Absolute Value and Negative Numbers" PPT courseware

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Upload Time: 2024-11-13

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Description

"Absolute Value and Negative Numbers" PPT courseware

absolute value geometric meaning

On the number axis, the distance from the point representing a number to the origin is called the absolute value of the number.

Teacher-student cooperation

Take a test to test your ability

What are the similarities and differences between the following sets of numbers? Please tell us what you think.

(1) 4 -4 (2) 3 -3 (3) 2.5 -2.5

Like this, only two numbers with different signs and equal absolute values are called one of the numbers to be the opposite of the other number. We also call the two numbers the opposite of each other.

Opposites represent the relationship between two numbers and cannot exist alone.

Summarize:

The absolute values of two numbers that are opposites of each other are equal.

People at the same table randomly write three positive numbers, three negative numbers and zero to each other, and then ask each other to find their absolute values.

group discussion

What does the absolute value of a positive number have to do with this number? What does the absolute value of a negative number have to do with this number? What does the absolute value of 0 have to do with 0?

summary

1. The geometric and algebraic meaning of absolute value

2. Can find the absolute value of a number

3. Definition of opposite number

4. Can find the opposite of a number

Today's homework

1. Complete the after-class exercises

2. Preview Comparison of Rational Numbers

Keywords: Absolute value and inverse number teaching courseware, Hebei Education Edition seventh grade mathematics volume PPT courseware download, seventh grade mathematics slide courseware download, absolute value and inverse number PPT courseware download, .PPT format;

For more information about the "Absolute Value and Opposite Numbers" PPT courseware, please click on the Absolute Value and Opposite Numbers ppt tab.

"Absolute Value and Negative Numbers" PPT Courseware 2:

"Absolute Value and Negative Numbers" PPT Courseware 2 Small test: state the meaning of the following types and simplify them: (1)ㄧ2.3ㄧ=______ ㄧ7/4ㄧ=______ㄧ6ㄧ=______ (2)ㄧ -5ㄧ=______ ㄧ-10.5ㄧ=______ㄧ-7/4ㄧ=______ -5 opposite number..

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Update Time: 2024-11-13

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Absolute value and opposite number ppt

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"Absolute Value and Negative Numbers" PPT courseware