"General Review - Formulas and Equations" PPT Courseware 2

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"General Review - Formulas and Equations" PPT Courseware 2

Recommended homework:

A shopping mall sells two items at the same time, each selling for 48 yuan. One item earns 20% and the other item loses 20%. Does the mall make money or lose money by selling these two items? How much money did you make (lose)?

48÷(1+20%)=40(yuan)

48÷(1-20%)=60(yuan)

(40+60)-48×2=4 (yuan)

Answer: I lost 4 yuan.

learning target:

1. Be able to use letters to express common quantitative relationships, calculation formulas, operating laws, and calculation methods.

2. Understand the meaning of equations, be able to solve equations skillfully, and be able to solve some practical problems by making equations and solving equations.

Letters can be used to express quantitative relationships.

For example, my age is represented by A, and my sister is 3 years older than me, so my sister’s age is A+3 years.

Letters can also be used to express formulas and laws.

For example, the distributive law of multiplication (a+b)c=ac+bc. Another example is the perimeter of the square = 4a.

remember:

1. What is an equation?

2. What are the connections and differences between equations and equations?

3. What properties do you know about equations? Please give an example.

Let’s talk about the steps to solve word problems using equations. Which step do you think is the most critical?

1) According to the meaning of the question, find the equivalent relationship.

2) Solution Let the unknown number be x.

3) List the equations based on the equivalent relationship.

4) Solve the equation, check and answer the sentence.

Recommended homework:

Solve problems with equations

Xiao Ming read a book. He read 28 pages on the first day, 1/5 of the whole book on the second day, and 3/8 of the whole book in two days. How many pages are there in this book?

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For more information about the "Formula and Equations" PPT courseware, please click on the "Formula and Equations ppt" tab.

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Update Time: 2024-11-16

This template belongs to Mathematics courseware People's Education Press Mathematics Volume 2 for Sixth Grade industry PPT template

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