"Investigating "Domestic Waste"" Decimal Division PPT Courseware

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"Investigating "Domestic Waste"" Decimal Division PPT Courseware

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"Investigating "Domestic Waste"" Decimal Division PPT Courseware

Investigation report on class 5 (1)

One person can produce about 30.8kg of domestic waste in 4 weeks.

Investigation report on class 5 (2)

This community produces a total of about 3.5 tons of domestic waste from Monday to Friday, and about 1.3 tons of domestic waste every day on weekends.

What mathematical questions can you ask based on the information given?

How many kilograms of domestic waste can an average person produce every day?

30.8÷(4×7)=30.8÷28=1.1(kg)

30.8÷4÷7=7.7÷7=1.1 (kg)

practice

1. "Forest News" sold for 78.4 yuan in one week.

(1) Based on the mathematical information in the figure, what mathematical questions can you ask?

(2) How many copies of "Forest News" are sold per day on average?

(3) Elephant spent a total of 3.4 yuan to buy 1 copy of "Forest" and 2 copies of "Story". How much is each copy of "Story"?

2. Do the math and discuss the order of operations with your partner.

90÷(3.6-1.8) 3.6÷0.4-1.2×5

3.4×7.8÷3.9 0.36÷0.3÷4

3. 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÷30÷3=1.1-0.95=0.15 (yuan)

Answer: This way each bag is 0.15 yuan cheaper than the retail price.

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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 Download:

"Investigating Domestic Waste" Decimal Division PPT Download Part One Content: 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 Learned addition, subtraction and multiplication of decimals...

"Investigating Domestic Waste" Decimal Division PPT:

"Investigating Domestic Waste" Decimal Division PPT Part One Content: 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..

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Update Time: 2024-09-30

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