Western Normal University Edition First Grade Mathematics Volume 1
People's Education Press First Grade Mathematics Volume 1
Beijing Normal University Edition Seventh Grade Mathematics Volume 1
People's Education Press Third Grade Mathematics Volume 1
People's Education Press Second Grade Mathematics Volume 1
Beijing Normal University Edition Fifth Grade Mathematics Volume 1
Hebei Education Edition Third Grade Mathematics Volume 1
Hebei Education Edition Seventh Grade Mathematics Volume 2
Beijing Normal University Edition Seventh Grade Mathematics Volume 2
Qingdao Edition Seventh Grade Mathematics Volume 1
People's Education High School Mathematics Edition B Compulsory Course 2
Jiangsu Education Edition Fourth Grade Mathematics Volume 1
Qingdao Edition Seventh Grade Mathematics Volume 2
Qingdao Edition Second Grade Mathematics Volume 2
Beijing Normal University Edition Fifth Grade Mathematics Volume 2
People's Education Press First Grade Mathematics Volume 2
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Category | Format | Size |
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People's Education Press Mathematics Volume 2 for Sixth Grade | pptx | 6 MB |
Description
"Discounts and Scores" Percentage PPT Courseware 3
1. Create situations and understand the meaning of "chengshu"
Agricultural harvest is often expressed as "number". For example, the newspaper wrote: "This year our province's rapeseed production increased by 20% compared with last year"...
Question: What does "20%" mean? Who can tell it in their own words.
Follow-up question: How much does "35%" mean? (35%)
2. Solve simple number problems
(1) Present situations and ask questions
A factory used 3.5 million kilowatt hours of electricity last year. This year it saved 25% of electricity compared with last year. How many million kilowatt hours of electricity was used this year?
Ask students to answer the questions independently and write down your problem-solving process clearly so that everyone can understand it at a glance.
(2) Exposing resources and organizing discussions
Default 1: 350×25%=87.5 (10,000 kilowatt hours)
Default 2: 350×(1+25%)=437.5 (10,000 kilowatt-hours)
Preset three: 350×(1-25%)=262.5 (10,000 kilowatt-hours)
Preset four: 350-350×25%=262.5 (10,000 kilowatt hours)
(3) Consolidation exercises
The autumn grain output of a certain county the year before last was 28,000 tons, and last year's output increased by 30% compared with the year before. How many tons of autumn grain were produced last year?
What should we pay attention to when solving practical problems related to numbers?
3. Solve slightly complex number problems
(1) Present situations and ask questions
The number of outbound tourists in a certain city in 2012 was 15,000, an increase of 20% from the previous year. How many outbound tourists did the city have in 2011?
Ask students to answer the questions independently and write down your problem-solving process clearly so that everyone can understand it at a glance.
(2) Exposing resources and organizing discussions
Default 1: 15000×(1+20%)=18000 (person-time)
Default 2: 15000÷(1+20%)=12500 (person-time)
Monitoring: Tell me what you think? Why is this problem solved by division?
(3) Raise awareness
Question: What is the key when solving practical problems about numbers?
Default: Understand the meaning of numbers; clarify who is the unit "1".
4. Assign homework
Homework: Exercise 2 on page 13, question 5.
Keywords: Percentage, Discount and Integral Courseware, New People's Education Edition Sixth Grade Mathematics PPT Courseware Volume 2, Sixth Grade Mathematics Slide Courseware Download, Percent, Discount and Integral PPT Courseware Download, .ppt format
For more information about the PPT courseware "Percentage Discount and Percentage", please click on the "Percentage Discount and Percentage ppt" tab.
"Discounts and Scores" Percentage PPT Courseware 2:
"Discounts and Percents" Percentage PPT Courseware 2 1. Create a situation and understand the meaning of discounts. Dad and Xiaoyu wanted to buy something in a department store, and the mall happened to have a promotion. Question: What does 10% off mean? ... ... ... 2. Solve the simple discount problem (1) Question...
"Discounts and Scores" Percentage PPT courseware:
"Discounts and Percents" Percentage PPT courseware 1. Create situations and introduce new lessons 2. Combine situations and learn new knowledge The store celebrates its 5th anniversary with a 10% discount on electrical appliances and a 15% discount on other products. Look at the discount and write the corresponding percentage. Dad bought a bicycle for Xiaoyu. The original price was 180 yuan..
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Update Time: 2024-08-11
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