| Category | Format | Size |
|---|---|---|
| Beijing Normal University seventh grade first volume mathematics | pptx | 6 MB |
"Absolute Value" Rational Numbers and Their Operations PPT Courseware 2
Description
"Absolute Value" Rational Numbers and Their Operations PPT Courseware 2
What is a number line?
A straight line that specifies the origin, positive direction, and unit length.
What is the opposite number?
Only two numbers with different signs are opposites of each other.
Rule: The opposite of 0 is 0.
The distance from the corresponding point of a number on the number axis to the origin is called the absolute value of the number, represented by "| |".
The distance from -5 to the origin is 5, so the absolute value of -5 is 5, recorded as |-5|=5
The distance from 0 to the origin is 0, so the absolute value of 0 is 0, recorded as |0|=0
The distance from 4 to the origin is 4, so the absolute value of 4 is 4, which is recorded as |4|=4
judge:
1. The number with the smallest absolute value is 0. ( )
2. The absolute value of a number must be a positive number. ( )
3. The absolute value of a number cannot be negative. ( )
4. Two numbers that are opposite to each other must have the same absolute value. ( )
5. The greater the absolute value of a number, the closer its point is to the origin on the number axis. ( )
What did you learn in this lesson? ? ?
(1) The concept of absolute value.
(2) How to find the absolute value of a number.
(3) The absolute value of a number is always greater than or equal to 0.
Keywords: Rational numbers and their operations courseware, absolute value courseware, Beijing Normal University edition seventh grade mathematics volume PPT courseware, seventh grade mathematics slide courseware download, rational numbers and their operations PPT courseware download, absolute value PPT courseware download, .ppt format
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"Absolute Value and Negative Numbers" PPT Courseware 2:
"Absolute Value and Negative Numbers" PPT Courseware 2 Small test: state the meanings of the following and simplify them: (1)ㄧ2.3ㄧ=______ ㄧ7/4ㄧ=______ㄧ6ㄧ=______ (2)ㄧ -5ㄧ=______ ㄧ-10.5ㄧ=______ㄧ-7/4ㄧ=______ -5 opposite number..
"Absolute Value and Negative Numbers" PPT courseware:
"Absolute Value and Negative Numbers" PPT courseware Geometric meaning of absolute value 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 will test you and test your ability. What are the similarities and differences between the following sets of numbers? Please tell me...
"Opposite Numbers and Absolute Value" PPT Courseware 2:
"Opposite Numbers and Absolute Value" PPT Courseware 2 Learning Objective: With the help of the number line, understand the meaning of opposite numbers. Can find the opposite of a number. Key points and difficulties in learning: Key point: The concept of absolute value Difficulty point: Using absolute value to compare the size of two negative numbers Reviewing the past and learning the new...
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Update Time: 2024-07-22
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