"Understanding of Negative Numbers" Preliminary Understanding of Negative Numbers PPT Courseware 3

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"Understanding of Negative Numbers" Preliminary Understanding of Negative Numbers PPT Courseware 3

Please say the opposite words or sentences from the teacher.

Look up and walk 200 meters forward

Elevator rises 15 floors

I deposited 500 yuan in the bank.

Xiaohong scored 20 points in the knowledge contest.

The canteen made 500 yuan.

10℃ above zero

i can do it

Is it okay to record minus 6℃ in Tianjin and 6℃ in Xi’an as 6℃?

Why? How should it be expressed?

Minus 6°C is recorded as - 6°C and read as minus 6°C;

6℃ is recorded as +6℃ or 6℃, and read as plus 6℃ or 6℃.

give it a try

1. Winning 5 games is recorded as _______, pronounced as _______; losing 3 games is recorded as _______, pronounced as _______.

2. Income of 100 yuan is recorded as _______, pronounced as _______; expenditure of 200 yuan is recorded as _______, pronounced as _______.

The height of sea level is regarded as ( ), the height higher than sea level is represented by ( ), and the height lower than sea level is represented by ( ).

Expressed with positive and negative numbers.

1. 12.5 degrees Celsius above zero is expressed as: ________, and 3.5 degrees Celsius below zero is expressed as: ________.

2. There is a pit somewhere in Guangxi. The mouth of the pit is 125-m higher than the sea level, which is expressed as: ________, and the bottom of the pit is -m lower than the sea level, which is expressed as: ________.

I can argue

1. Any negative number is smaller than a positive number. ( )

2. A number is either positive or negative. ( )

3. Because there is no "+" sign in front of "4", "4" is not a positive number. ( )

4. Five people getting on the bus will be counted as "+5 people", and four people getting off the bus will be counted as "-4 people". ( )

5. All positive numbers are greater than 0, and all negative numbers are less than 0. ( )

6. The temperatures represented by 5°C and +5°C are the same. ( )

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"Understanding of Negative Numbers" Preliminary understanding of negative numbers PPT courseware 2:

"Understanding of Negative Numbers" Preliminary Understanding of Negative Numbers PPT Courseware 2 Scientists set the freezing temperature of water as 0℃. Read: 0 degrees Celsius. Temperatures lower than 0℃ are represented by numbers with a - sign, such as: -15℃ read: minus 15 degrees Celsius. Can also be read as minus 15 degrees Celsius. Than 0..

"Understanding of Negative Numbers" PPT courseware for preliminary understanding of negative numbers:

"Understanding of Negative Numbers" Preliminary Understanding of Negative Numbers PPT Courseware Learning Objectives: 1. Be able to flexibly use the knowledge learned to solve more complex problems such as what fraction of a number is known and how to find this number; in the process of solving the problem Master some basic strategies to solve such problems...

"Understanding of Negative Numbers" Negative Numbers PPT Courseware:

"Understanding of Negative Numbers" Negative Numbers PPT Courseware 1. The conversation is exciting and introduces new lessons. Have you ever seen negative numbers in your life? Do you know what it means? 2. Combine the situation and understand the meaning. The following is the temperature forecast for six cities released by the Central Meteorological Observatory on the afternoon of January 21, 2012.

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Update Time: 2024-07-01

This template belongs to Mathematics courseware Western Normal University Edition Sixth Grade Mathematics Volume 1 industry PPT template

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