"Solving Simple Practical Problems by Solving Equations" Equations PPT Courseware

Description

"Solving Simple Practical Problems by Solving Equations" Equations PPT Courseware

teaching objectives

1. Combined with specific examples, experience the process of finding equivalence relationships, using equations to express equivalence relationships in simple situations, and applying the properties of equations to solve equations.

2. Be able to use equations to express equivalence relationships in simple situations, and be able to use the properties of equations to solve equations.

3. In the process of analyzing problems and using equations to represent quantitative relationships in mathematical problems, understand the role of equations and gain learning experience in solving problems using equations.

Explore new knowledge

Uncle Wang is a reporter for a newspaper. After he learned to type on a computer, he could type 120 words per minute. Do you know how many words Uncle Wang writes by hand per minute?

Number of words written by Uncle Wang × 3 = 120

Solution: Suppose Uncle Wang writes x words by hand every minute.

3x=120

x＝120÷3

x=40

Answer: Uncle Wang writes 40 words per minute.

practice

1. An elephant can eat 205 kilograms of food per day, which is equivalent to 5 times what a cow eats per day. How many kilograms of food does a cow eat per day?

Solution: A cow eats x kilograms of food per day.

5x=205

5x÷5＝205÷5

x=41

Answer: A cow eats 41 kilograms of food every day.

2. The time it takes for the Earth to orbit the Sun is 13 days longer than 4 times the time it takes for Mercury to orbit the Sun. How many days does it take for Mercury to orbit the sun?

Solution: Mercury takes x days to orbit the sun.

4x+13=365

4x+13-13＝365-13

4x=352

x=88

Answer: Mercury takes 88 days to orbit the sun.

Keywords: Equations teaching courseware, Solving simple practical problems with equations teaching courseware, Hebei Education Edition fifth grade mathematics PPT courseware download, Fifth grade mathematics slide courseware download, Equations PPT courseware download, Solving simple practical problems with equations PPT courseware Download, .PPT format;

For more information about the PPT courseware "Solve Simple Practical Problems with Sequences of Equations and Equations", please click on the ppt tag of Solve Simple Practical Problems with Sequences of Equations and Equations.

File Info

Update Time: 2024-11-17

This template belongs to Mathematics courseware Hebei Education Edition Fifth Grade Mathematics Volume 1 industry PPT template

Preview