"Fraction Multiplication (1)" Fraction Multiplication PPT Courseware (Lesson 1)

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"Fraction Multiplication (1)" Fraction Multiplication PPT Courseware (Lesson 1)

Part One: Learning Objectives

1. Experience the exploration process of fraction multiplication calculation methods, understand the meaning of fraction multiplication, and experience the application of intuitive models and "transformation" ideas.

2. Master the calculation method of integer multiplication fractions, and be able to calculate integer multiplication fractions proficiently and accurately.

3. Feel the close connection between mathematics and daily life, and gain successful experience in learning activities.

[Key Points] Understand the meaning of fraction multiplication, master the calculation method of integer multiplication fractions, and be able to calculate integer multiplication fractions proficiently and accurately.

[Difficulty] Be able to calculate multiplied fractions by integers proficiently and accurately.

Fraction multiplication PPT, part 2: exploration of new knowledge

Change the following addition expressions to multiplication expressions:

3+3+3

5+5+5+5

7+7+7+7+7

It is easier to find the sum of several identical addends by multiplication.

1 occupies 1/5 of the entire note, and 3 occupies what fraction of the entire note?

How to calculate in group discussion and communication?

What is the sum of 2 3/7? Do you understand the algorithm below? Talk to your companions.

Multiplication of Fractions PPT, Part 3: Classroom Exercises

How much is 1.4 2/15? Paint it and do the math.

2. Fill in the blanks.

(1) The meaning of multiplying a fraction by an integer is the same as that of (         ) multiplication, which is a simple operation to find the sum of several (         ) addends.

(2) 2/7 + 2/7+2/7=（ ）×（ ）=（ ）

(3) 3/7×4＝（ ）＋（ ）＋（ ）＋（ ）＝（ ）

(4) 4/9×6 means ( ).

3. Fill it out and discuss with your peers why it can be calculated in this way.

4. Fill in “＜”, “＞” or “=" in ( ).

8×4/15 ( ) 8 2/9×6 ( ) 2/9

5/7×1 ( ) 5/7 6×4/15 ( ) 4

Fraction Multiplication PPT, Part 4: Class Summary

The calculation method of multiplying a fraction by an integer is as follows: multiplying a fraction by an integer, using the product of the numerator of the fraction and the integer as the numerator, and the denominator remains unchanged.

Fraction Multiplication PPT, Part 5: Homework

1. Do the math.

3/4×7 2/15×8 2/3×4

2. The side length of a square is 8/9 decimeters. What is its perimeter in decimeters?

Answer: Its circumference is 32/9 decimeters.

3.What part of the cake did dad eat?

I ate 1/7 of this cake

I ate twice as much as Taotao.

Answer: Dad ate 2/7 of this cake.

4. A tractor plows a piece of land, plowing 1/12 of the land every hour, working 7 hours a day, what fraction of the land is plowed?

Answer: 7/12 of the land was plowed.

5. A car travels 7/9 kilometers per minute. How many kilometers does it travel in 5 minutes?

Answer: 35/9 kilometers in 5 minutes.

Keywords: Beijing Normal University edition fifth grade mathematics PPT courseware for volume 2 free download, fraction multiplication PPT download, .PPT format;

For more information about the "Multiplying Fractions" PPT courseware, please click the Multiplying Fractions PPT tab.

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Update Time: 2024-11-01

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

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