"Number of Stamps" Use Equations to Solve Problems PPT Download

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"Number of Stamps" Use Equations to Solve Problems PPT Download

Part One: Learning Objectives

1. Learn to solve equations of the type "ax±x=b" and further understand the meaning of the equation. (emphasis)

2. Use different methods to formulate equations based on different equivalence relationships, and use equations to solve simple practical problems. (difficulty)

PPT on the number of stamps, part 2: exploring new knowledge

Knowledge point: Solutions to equations of type “ax±x=b”

(1) How many stamps does each brother and sister have? Try to solve it using equations.

Number of stamps for sister = number of stamps for brother × 3

Number of stamps for brother + number of stamps for sister = 180

(2) Use equations to solve problems.

Solution: Suppose the younger brother has x stamps and the older sister has 3x stamps.

Answer: My brother has 45 stamps and my sister has 135 stamps.

(3) How many stamps does each brother and sister have? Solve using equations.

Knowledge refining

To solve an equation of type ax±x=b, use the distributive law of multiplication and the properties of equality to convert the equation into an equation of type ax=b to solve.

Number of stamps PPT, part 3: Consolidation exercises

1. Solve the equation. (Selected from textbook P70 T2)

2. Mom’s age is 3 times and 4 years older than Xiaoli’s. Mom is 37 years old. How old is Xiaoli this year? Solve problems using equations. (Selected from textbook P70 T3)

3. How many oranges are there on an average plate? (Selected from textbook P70 T4)

Solution: Assume that there are x oranges per plate on average.

4x+2=50

x=12

Answer: On average, there are 12 oranges per plate.

4. As shown in the figure, the perimeter of the square is 5 cm longer than the perimeter of the equilateral triangle. How many centimeters are the perimeters of the square and the triangle? (Selected from textbook P70 T5)

Solution: Let the side length of the square and triangle be x.

4x－3x=5

x=5

Perimeter of the square: 4×5=20(cm)

Perimeter of triangle: 3×5=15(cm)

Number of stamps PPT, part 4 content: Class summary

What knowledge have you learned in this class?

To solve an equation of type ax±x=b, use the distributive law of multiplication and the properties of equality to convert the equation into an equation of type ax=b to solve.

Number of stamps PPT, Part 5: Homework

Assignment 1: Complete the exercises related to the textbook.

Assignment 2: Complete the corresponding exercises.

Keywords: Free download of Beijing Normal University edition fifth grade mathematics PPT courseware for the second volume, number of stamps PPT download, use of equations to solve problems PPT download, .PPT format;

For more information about the PPT courseware "Using Equations to Solve Problems Number of Stamps", please click the PPT tab of "Using Equations to Solve Problems PPT Number of Stamps".

"Number of Stamps" Use Equations to Solve Problems PPT:

"Number of Stamps" Use Equations to Solve Problems PPT Part One: Review Introduction Earlier we learned about equations, students, think about what an equation is? Ask the students to observe the situation picture and talk about what mathematical information is in the picture? What is the difference between these information...

"Number of Stamps" Using Equations to Solve Problems PPT Courseware 3:

"Number of Stamps" Use Equations to Solve Problems PPT Courseware 3 Oral Calculation: Tell the solution to the equation. 6m=42 4x=20 9y=54 24n=96 3y=45 4y=36 5n=50 4m=100 ... ... ... Quick answer: 2m-m= 4y+3y= x+x= y+2y = 6m-m= 9n-3n= y+y= 2..

"Number of Stamps" Using Equations to Solve Problems PPT Courseware 2:

"Number of Stamps" Using Equations to Solve Problems PPT Courseware 2 How many stamps do each brother and sister have? Try to solve it using equations. The number of stamps for sister = the number of stamps for brother 3 The number of stamps for brother + the number of stamps for sister = 180 ... ... ... 1. According to the following...

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Update Time: 2024-09-02

This template belongs to Mathematics courseware Beijing Normal University Edition Fifth Grade Mathematics Volume 2 industry PPT template

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