| Category | Format | Size |
|---|---|---|
| Beijing Normal University Edition Fifth Grade Mathematics Volume 1 | pptx | 6 MB |
"Investigating Domestic Waste" Decimal Division PPT Download
Description
"Investigating Domestic Waste" Decimal Division PPT Download
Part One: Classroom Introduction
1. Understand that the order of operation of mixed decimal operations is the same as that of integers, and be able to calculate four mixed decimals (mainly two steps, no more than three steps)
2. Use the decimal addition, subtraction, multiplication and division learned to solve practical problems in daily life and develop application awareness.
3. Cultivate students’ good habits of discussing mathematical problems and their ability to synthesize problems.
Surveying Domestic Waste PPT, Part 2: Exploration of New Knowledge
What mathematical information did you gain from this debriefing situation?
Given this mathematical information, what mathematical questions can you ask?
How many kilograms of domestic waste does an average person produce every day?
method 1
30.8÷(4×7)
=30.8÷28
=1.1 (kg)
Answer: On average, a person produces 1.1 kilograms of domestic waste every day.
Method 2
30.8÷4÷7
=7.7÷7
=1.1 (kg)
Answer: On average, a person produces 1.1 kilograms of domestic waste every day.
Survey of Domestic Waste PPT, Part 3: Class Summary
The order of mixed operations on decimals is the same as the order of mixed operations on integers, and the laws of integer operations also apply to decimal operations.
Survey of Domestic Waste PPT, Part 4 Content: Classwork
What mathematical questions can you ask based on the mathematical information in the figure?
0.5×8=4 (yuan)
How much does it cost to buy 5 copies of "Forest News"?
Answer: It costs 4 yuan.
Naughty Home orders 3 bags of pure milk every day in September and pays a total of 85.5 yuan at the wholesale price. How much cheaper is each bag than the retail price?
1.1－85.5÷（3×30）
=1.1-0.95
＝0.15 (yuan)
Answer: This way each bag is 0.15 yuan cheaper than the retail price.
Keywords: Beijing Normal University edition fifth grade mathematics PPT courseware free download, investigation of domestic waste PPT download, decimal division PPT download, .PPT format;
For more information about the PPT courseware "Investigating Domestic Waste Using Decimal Division", please click the "Investigating Domestic Waste Using Decimal Division PPT" PPT tag.
"Investigating Domestic Waste" Decimal Division PPT:
"Investigating Domestic Waste" Decimal Division PPT Part One: New Lesson Introduction The following is the investigation of domestic waste by two classes in fifth grade. What mathematical information did you gain from this investigative report? Five (1) shifts: One person can produce about 30.8kg of domestic waste in 4 weeks..
"Investigating "Domestic Waste"" Decimal Division PPT Courseware:
"Investigating Domestic Waste" Decimal Division PPT Courseware Survey Report for Class 5 (1) One person can produce about 30.8kg of domestic waste in 4 weeks. Investigation report of class 5 (2): This community produces a total of about 3.5 tons of domestic waste from Monday to Friday, and about 1.0 tons of domestic waste is generated every day on weekends.
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Update Time: 2024-07-01
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