"Multiplying Fractions (3)" PPT Download of Multiplying Fractions (Lesson 1)

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"Multiplying Fractions (3)" PPT Download of Multiplying Fractions (Lesson 1)

Part One: Learning Objectives

1. Understand the meaning of fractions multiplied by fractions, explore and master the calculation method of fractions multiplied by fractions, and be able to calculate correctly. (emphasis)

2. Understand the arithmetic and derivation process of multiplying fractions by fractions. (difficulty)

interesting score

Lele encountered such a true or false question: first eat half of a watermelon, and then eat the remaining half of the watermelon. At this time, there is still a quarter of the entire watermelon left. He dialed the wrong number without hesitation. He thought that after eating half of it, wouldn't there be half left, that is, one-half? Is he right?

Fraction multiplication PPT, part 2: exploring new knowledge

Knowledge Points The meaning of multiplying fractions by fractions

(1) Read these and think about it. What percentage of this note is the remaining part?

Knowledge refining

The meaning of multiplying fractions by fractions: Find out what fraction of a fraction is. From the meaning of multiplying fractions by fractions, we can see that to find out what fraction of a fraction is, use multiplication.

Knowledge points Calculation method of multiplying fractions by fractions

(2)3/4×1/4=? Fold a rectangular piece of paper, think about it, and do the math.

(3) Fold it, do the calculations, and talk about it.

Knowledge refining

The calculation method of multiplying fractions by fractions: the product of multiplying the numerators is used as the numerator, and the product of multiplying the denominators is used as the denominator. If the fraction can be reduced, it can be reduced first and then calculated.

Fraction Multiplication PPT, Part 3: Consolidation Practice

1. It was Naughty’s birthday. Mom bought a cake and cut 1/3 of it for Naughty. Naughty only ate 1/2 of it. What fraction of the whole cake did Naughty eat? Draw a picture and do the math. (Selected from textbook P29 T1)

2. (Selected from textbook P29 T3)

3. 1/6 of the total area of ​​a community in Lian Yi Lian is open space, and 4/5 of the open space is intended to be used for planting trees and grass. What fraction of the total area of ​​the community is occupied by the area used for planting trees and grass?

4. A rectangle is 5/2m long and 2/3 wide. How many meters is the width? What is the area of ​​this rectangle in square meters?

Fraction Multiplication PPT, Part 4: Class Summary

What knowledge have you learned in this class?

The calculation method of multiplying fractions by fractions: the product of multiplying the numerators is called the numerator, and the product of multiplying the denominators is called the denominator; if it can be reduced, first reduce the fraction and then calculate.

Fraction Multiplication PPT, Part 5: Homework

Assignment 1: Complete the exercises related to the textbook.

Assignment 2: Complete the corresponding exercises.

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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"Reciprocal" Fraction Multiplication PPT:

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"Multiplying Fractions (3)" PPT Download of Multiplying Fractions (Lesson 2):

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Update Time: 2024-11-20

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

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