"From Calculation to Equation" PPT courseware 3 for linear equations of one variable

Description

"From Calculation to Equation" PPT courseware 3 for linear equations of one variable

teaching objectives

1. Understand equations, linear equations of one variable, solutions to equations, and the definition of solving equations.

2. Be able to find equivalence relationships and list equations

Example 1 Based on the following problem, assume the unknowns and list the equations

(1) A computer has been used for 1700 hours and is expected to be used for another 150 hours per month. How many months will it take for the computer to reach the required maintenance time of 2450 hours?

Solution: Suppose the usage time of this computer reaches 2450 hours after x months, then it has been used for 150x hours after x months.

List of equations 1700+150x=2450

(2) Use a 24cm long wire to form a rectangle so that its length is 1.5 times its width. What should be the length and width of the rectangle?

Solution: Assume the width of the rectangle is xcm, then the length is 1.5xcm.

The equation 2(x+1.5x)=24

Let's practice and see who gets the answer right?

1. Judgment question

1. An algebraic expression containing unknown numbers is called an equation ( )

2. An equation whose degree of unknown is linear is a linear equation of one variable. ()

Two, fill in the blanks

1. The difference between ½ and 3 of a certain number x is 7. The equation is

2. The sum of 25% and 15 of a certain number y is equal to 45% of it. The equation is:

3. The father is 37 years old this year, which is three times the age of his son and one year more. Assume the son is x years old, and the equation is:

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For more information about the PPT courseware "Linear Equations of One Variable from Calculations to Equations", please click the "Linear Equations of One Variable PPT From Calculations to Equations ppt" tag.

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"From Calculation to Equation" PPT courseware 2 for linear equations of one variable:

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"From Formulas to Equations" PPT courseware for linear equations of one variable:

"From Calculation to Equation" PPT courseware for linear equations of one variable. Do you know what an equation is? Equations with Unknowns Can you give some examples of equations? Exercise: 1. Determine whether the following expression is an equation, mark it if it is correct, mark x if it is wrong. (1) 1+2=3 ..

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Update Time: 2024-10-19

This template belongs to Mathematics courseware People's Education Press Seventh Grade Mathematics Volume 1 industry PPT template

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