Western Normal University Edition First Grade Mathematics Volume 1
Beijing Normal University Edition Seventh Grade Mathematics Volume 1
People's Education Press First Grade Mathematics Volume 1
People's Education Press Second Grade Mathematics Volume 1
People's Education Press Third Grade Mathematics Volume 1
Hebei Education Edition Third Grade Mathematics Volume 1
Beijing Normal University Edition Seventh Grade Mathematics Volume 2
Beijing Normal University Edition Fifth Grade Mathematics Volume 1
Qingdao Edition Seventh Grade Mathematics Volume 1
Beijing Normal University Edition Eighth Grade Mathematics Volume 1
Hebei Education Edition Seventh Grade Mathematics Volume 2
People's Education High School Mathematics Edition B Compulsory Course 2
Jiangsu Education Edition Fourth Grade Mathematics Volume 1
People's Education Press First Grade Mathematics Volume 2
Qingdao Edition Seventh Grade Mathematics Volume 2
Beijing Normal University Edition Fifth Grade Mathematics Volume 2
Category | Format | Size |
---|---|---|
Qingdao Edition Fourth Grade Mathematics Volume 1 | pptx | 6 MB |
Description
"Protecting Swans" PPT Courseware 3
1. Situation introduction
Each bag of feed weighs 46 kilograms, buy 250 bags.
Transported by a small truck with a load capacity of 9 tons.
Can it be shipped in one go?
What questions can you ask based on this information?
What mathematical information do you know from the picture?
2. Cooperation and exploration
Each bag of feed weighs 46 kilograms, buy 250 bags. Can it be transported by a small truck with a load of 9 tons? Can it be transported in one go?
This problem can be solved by estimating.
Think about it, is this estimate correct?
Originally, each bag of feed did not weigh that much, but we estimated too much, and the result exceeded the actual total.
Judgment is irrational.
3. Independent practice
1. Make an estimate and put a “√” behind the equation that yields a number less than 8,000.
328×18□ 295×42□ 405×11□
596×19□ 321×22□ 187×49□
2. The children's theater has 24 rows of seats, each row can seat 36 people. There are 600 students in the experimental primary school. Can they sit down?
24≈20
36≈30
20×30=600 (person)
600 people=600 people
So, can't sit down.
Keywords: Protect the swan teaching courseware, Qingdao edition fourth grade mathematics volume PPT courseware download, fourth grade mathematics slide courseware download, Protect the swan PPT courseware download, .PPT format;
For more information about the "Protect the Swans" PPT courseware, please click the "Protect the Swans" ppt tab.
"Protecting Swans" PPT courseware 10:
"Protect the Swan" PPT Courseware 10 Oral Calculation 62 = 204 = 620 = 104 = 6200 = 54 = 1.6 What is the expansion to 10 times of the original size? 610=60 What would it be if 2.6 were expanded to 100 times its original size? 6100=600 Summary: Multiplying a number can also be said to multiply this number...
"Protecting Swans" PPT Courseware 9:
"Protecting Swans" PPT Courseware 9 What patterns did you discover through the observations just now? If one factor remains unchanged and the other factor is expanded to the original multiple, the product will also be expanded to the original multiple. Let’s practice. What is the 10 times expansion of 1.6? 610=60 2.35 reduced by 5 times..
"Protecting Swans" PPT courseware 8:
"Protecting Swans" PPT courseware 8 Happy eating fruit. 352=70 1407=980 2803=840 2304=920 136=78 1406=840 183=54 2503=750 175=85 Explore new knowledge ① Oral calculation: Student: First use 1063=318 and then add a 0 at the end of the product. ②Written calculation...
File Info
Update Time: 2024-10-02
This template belongs to Mathematics courseware Qingdao Edition Fourth Grade Mathematics Volume 1 industry PPT template
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