"Multiplication of Fractions (1)" Multiplication of Fractions PPT (Lesson 1)

Description

"Multiplication of Fractions (1)" Multiplication of Fractions PPT (Lesson 1)

Part One: Learning Objectives

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

2. Understand the arithmetic of multiplying fractions by whole numbers. (difficulty)

Situation import

In today's physical education class, the teacher asked the students to practice long-distance running on the track. According to the requirements, each person should run 1,000 meters, but the little fat Li Ming ran out of breath after running for a while. While running, he said to his classmate Wang Qiang: "Oh, I'm so exhausted. How many more meters do I have to run to finish the distance?" Wang Qiang said: "Running is the best way to lose weight, hold on! We'll probably run the whole distance again." Two-fifths of the run is over. Come on!" Li Ming said anxiously: "Hurry up and calculate for me, how much is two-fifths of the whole journey?" "Students, can you help Li Ming do the math?

Fraction multiplication PPT, part 2: exploring new knowledge

Knowledge points: The meaning and calculation method of multiplying fractions by whole numbers

(1) 1 of these accounts for 1/5 of the entire note, and 3 of them account for what fraction of the entire note?

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

(3) Do the math and talk about how to calculate the multiplication of fractions and integers.

Knowledge refining

The meaning of multiplying fractions by integers is the same as that of multiplying integers. They are both simple operations for finding the sum of several identical addends.

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

Fraction Multiplication PPT, Part 3: Consolidation Practice

1. Fill in the form and discuss with your peers why it can be calculated in this way.

2. (Selected from textbook P23 T3)

3. Apply it and do the math.

(1) What is 3 1/5?

(2) What is 3 3/16?

4. The thickness of an exercise book is 2/3 cm, and the thickness of a fairy tale book is 4 times that. How many centimeters is the fairy tale book thick?

Fraction Multiplication PPT, Part 4: Class Summary

What knowledge have you learned in this class?

The meaning of multiplying fractions by integers is the same as that of multiplying integers. They are both simple operations for finding the sum of several identical addends.

The calculation method of multiplying a fraction by an integer is to use 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

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.

"Reciprocal" Fraction Multiplication PPT Download:

"Reciprocal" Fraction Multiplication PPT Download Part One: Learning Objectives 1. Recognize reciprocals, understand the meaning of reciprocals, and master the method of finding the reciprocal of a number. (Key points) 2. Understand that two numbers that are reciprocal to each other are interdependent. (Difficulty) ... ... ...

"Reciprocal" Fraction Multiplication PPT:

"Reciprocal" Fraction Multiplication PPT Part One Content: Learning Objectives 1. To enable students to understand the meaning of reciprocals, master the method of finding reciprocals, and be able to correctly and skillfully find reciprocals. 2. Further cultivate students' independent learning ability and improve students' observation, comparison, generalization and...

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

"Multiplying Fractions (3)" Fractional Multiplication PPT Download (Lesson 2) Part One: Learning Objectives 1. Further master the calculation method of multiplying fractions by fractions, and be able to calculate correctly. (Key Points) 2. Understand the rules of how a number is multiplied by a fraction and the size of the product changes, and...

File Info

Update Time: 2024-10-31

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

Preview