"Problem Solving" PPT courseware download

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"Problem Solving" PPT courseware download

Part One: Introduction of New Course

A hare and a tortoise are racing. The distance from the starting point to the finishing point is 450 meters. Who will reach the finishing line first? How early should I arrive?

I run 5 meters per minute.

I run 5 meters more per minute than the turtle.

What are the speeds of the tortoise and the hare?

Speed ​​refers to the distance an object moves per unit time.

(1) Calculate the distance the rabbit runs per minute:

5+5=10 (meters)

(2) Find the time it takes for the turtle to reach the end point:

450÷5=90 (minutes)

(3) Find the time it takes for the rabbit to reach the end point:

450÷10=45 (minutes)

(4) Since 90>45, that is to say, the tortoise takes more time to reach the end point than the rabbit, so the rabbit reaches the end point first, earlier than the tortoise.

90 − 45=45 (minutes) to arrive.

Problem Solving PPT, Part 2: Classroom Exercises

A long-distance bus from Beijing to Qingdao departs from Beijing at 6:30 in the morning, travels an average of 85 kilometers per hour, and takes about 8 hours to reach Qingdao.

(1) How many kilometers is it from Beijing to Qingdao?

85×8=680 (km)

Answer: It is about 680 kilometers from Beijing to Qingdao.

(2) Approximately when will this long-distance bus arrive in Qingdao?

6+8=14 (hours)

14:00 + 30:00 = 14:30

Answer: This long-distance bus arrived in Qingdao at about 14:30.

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For more information about "Solving Problems in Millimeters and Kilometers" PPT courseware, please click on the "Solving Problems in Millimeters and Kilometers ppt" tab.

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Update Time: 2024-11-21

This template belongs to Mathematics courseware Hebei Education Edition Third Grade Mathematics Volume 2 industry PPT template

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