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Hebei Education Edition Seventh Grade Mathematics Volume 2
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People's Education High School Mathematics Edition B Compulsory Course 2
Beijing Normal University Edition Eighth Grade Mathematics Volume 1
Qingdao Edition Seventh Grade Mathematics Volume 2
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!["Ancient Trees in Mount Tai" PPT Courseware 2](https://font2020.oss-cn-beijing.aliyuncs.com/ppt1/7eeecafc138479abdde8df471d39862a.jpg)
Category | Format | Size |
---|---|---|
Qingdao Edition Fourth Grade Mathematics Volume 2 | pptx | 6 MB |
Description
"Ancient Trees in Mount Tai" PPT Courseware 2
1. Situation introduction
Red Gate: 3449 trees
Zhongtianmen: 527 trees
Nantianmen: 1640 trees
How many ancient trees are there in Hongmen, Zhongtianshan and Nantianmen?
Dai Temple: 250 trees
Lingyan Temple: 10891 trees
How many times the number of ancient trees in Lingyan Temple is that in Dai Temple?
Based on this information, what questions can you ask?
What mathematical information do you know from the picture?
2. Cooperation and exploration
How many ancient trees are there in Hongmen, Zhongtianshan and Nantianmen?
3449 + 527 + 1640 =? (tree)
When the number in the formula is relatively large and it is troublesome to calculate, we can use a calculator to calculate it.
Do you know a calculator?
Questions for group exploration
1. Tell me what you know about calculators.
2. What are the external characteristics, basic structure and basic functions of a calculator?
3. What are the functions and operation methods of the main keys of the calculator?
give it a try
For the following two sets of questions, what calculation method is more appropriate? Give it a try.
The first group: 17+83= 125×8= 1000÷5=
The second group: 7865+3497= 835×23= 1305÷45=
Use calculators wisely.
Can you use a calculator to calculate the following two questions?
545 + 285 -139 =
816÷68×27=
For two-step calculation questions of the same level, press the keys directly to calculate the result from left to right according to the order of operations.
3. Independent practice
1. A faucet that is not closed tightly will drip about 18 kilograms of water every day, and this water will be drained away in vain...
◆According to this calculation, a faucet that is not closed tightly will waste ( ) kilograms for two years (calculated as 365 days in a year).
◆Put the water in drinking water barrels (each barrel is calculated as 15 kilograms). The water can fill approximately ( ) barrels.
◆If a family of three uses 6 barrels of water every month, this water is enough for ( ) months, which is about ( ) years.
2. Use a calculator to calculate.
559+241= 721-324=
59×84= 3123÷9=
729+362-826= 667+234×12=
5846-(1428+519)= (1645-865)×29=
Keywords: Taishan Ancient Tree Teaching Courseware, Qingdao Edition Fourth Grade Mathematics Volume 2 PPT Courseware Download, Fourth Grade Mathematics Slide Courseware Download, Taishan Ancient Tree PPT Courseware Download, .PPT format;
For more information about the "Taishan Ancient Trees" PPT courseware, please click the "Taishan Ancient Trees" ppt tab.
"Taishan Ancient Trees" PPT courseware:
"Taishan Ancient Trees" PPT courseware 1. Situation introduction Hongmen: 3449 trees Zhongtianmen: 527 trees Nantianmen: 1640 trees How many ancient trees are there in Hongmen, Zhongtianshan and Nantianmen? Dai Temple: 250 trees Lingyan Temple: 10,891 trees The number of ancient trees in Lingyan Temple is several times that of Dai Temple..
File Info
Update Time: 2024-09-05
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