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
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Beijing Normal University Edition Seventh Grade Mathematics Volume 2
Qingdao Edition Seventh Grade Mathematics Volume 1
Hebei Education Edition Third Grade Mathematics Volume 1
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People's Education High School Mathematics Edition B Compulsory Course 2
Hebei Education Edition Seventh Grade Mathematics Volume 2
Hebei Education Edition Fourth Grade Mathematics Volume 2
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Category | Format | Size |
---|---|---|
People's Education Press Seventh Grade Mathematics Volume 1 | pptx | 6 MB |
Description
"Practical Problems and Linear Equations of One Variable" PPT Courseware 3 of Linear Equations of One Variable
Example 1 There are 22 workers in a workshop. Each person can produce 1,200 screws or 2,000 nuts per day. One screw needs to be matched with 2 nuts. In order to ensure that the screws and nuts produced every day are exactly matched, workers who produce screws and nuts should be arranged. How many of each?
Analysis: When the number of nuts produced every day is twice the number of screws, they are just matched.
Solution: Suppose x workers should be arranged to produce screws and (22-x) workers to produce nuts.
List the equation based on the number of nuts being twice the number of screws
2000(22-x)=2×1200x
Solving the equation, we get 5(22-x)=6x
110-x=6x
11x=110
x=10
22-x=12
General steps for solving word problems using equations
1. Review the question: Analyze the meaning of the question and find out the key words and quantitative relationships in the question.
2. Set the element: Choose an appropriate unknown number to represent it with a letter.
3. List equations: list equations based on equivalence relationships;
4. Solve the equation and find the value of the unknown;
5. Check and answer: Check whether the obtained value is correct and reasonable; write the answer.
Keywords: Courseware of linear equations of one variable, practical problems and linear equations of one variable courseware, New People's Education Edition seventh grade mathematics PPT courseware, download of seventh grade mathematics slide courseware, download of PPT courseware of linear equations of one variable, practical problems and linear equations of one variable PPT courseware Download, .ppt format
For more information about the PPT courseware "Practical Problems of Linear Equations of One Variable and Linear Equations of One Variable", please click on the "Practical Problems of Linear Equations of One Variable PPT and Linear Equations of One Variable PPT" tag.
"Practical problems and linear equations of one variable" PPT courseware for linear equations of one variable 2:
"Practical Problems and Linear Equations of One Variable" PPT Courseware for Linear Equations of One Variable 2 This problem is very simple to solve by formulating equations, because each chicken has one head and two feet, and each rabbit has one head and four feet. Suppose there are x chickens in the secondary cage, then there are (35-x) rabbits, and...
"Practical Problems and Linear Equations of One Variable" PPT courseware for linear equations of one variable:
"Practical Problems and Linear Equations of One Variable" PPT Courseware Question 1 of Linear Equations of One Variable: When you want to solve the problem, you must find out how many points you get for winning a game and how many points you get for losing a game. You can get the points you get for losing a game from the points table. Divide? Analysis: Observe the standings, starting from the bottom one...
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Update Time: 2024-10-19
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