"Addition and Subtraction of Fractions with Different Denominators" Addition and Subtraction of Fractions PPT

Description

"Addition and Subtraction of Fractions with Different Denominators" Addition and Subtraction of Fractions PPT

Part One: Introduction to the topic

1. Calculate the following questions orally.

2. Convert the following fractions into their simplest fractions.

New knowledge on teaching

Example 1: The fraction unit of 3/5 is ( ), and it has ( ) such fraction units.

The fractional unit of 2/3 is ( ), and it has ( ) such fractional units.

Example 2: Uncle Li wants to grow vegetables in a square field. Cabbage occupies 5/8 of the land area and peppers account for 1/8 of the land area. Please help Li Dabo calculate these two vegetables. What fraction of the land does it occupy in total?

Knowledge points

To add fractions with the same denominator, add the numerators without changing the denominator.

Addition and subtraction of fractions with different denominators PPT, part 2 content: knowledge sorting

Knowledge point 1: Add fractions with the same denominator, keep the denominator unchanged, and add the numerators.

Example 1: Uncle Li uses 5/12 kinds of tomatoes and 1/12 kinds of peppers in a piece of land. What fraction of the land does the tomatoes and peppers grown by Uncle Li occupy in total?

Knowledge point 2: Subtract fractions with the same denominator. Keep the denominator unchanged and subtract the numerator.

Example 1: A batch of fruit is shipped into the store. Apples account for , and oranges account for , of the total number of fruits. What fraction of the total number of apples are there compared to oranges?

Addition and subtraction of fractions with different denominators PPT, Part 3: Classroom exercises

1. Think about it and fill it in.

(1) The fractional unit of 5/9 is ( ), and it has ( ) such fractional units. The fraction unit of 2/9 is ( ), and it has ( ) such fraction units.

So 5/9+2/9=7/9.

(2) 6/11 means 6 ( ), minus 3 ( ), the difference is ( ) ( ), which is 3/11.

2. Directly written book.

Addition and subtraction of fractions with different denominators PPT, Part 4: After-class exercises

1. fill in the blank.

2. calculate.

3. Solve the problem.

Wu Yan deposited 27/5 yuan in the class bank. If she gave the money to Wang Fang 7/5 yuan, the two people would have the same amount of money. How much money did Wang Fang save? How much money did the two of them save together?

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For more information about the PPT courseware "Addition and Subtraction of Fractions, Addition and Subtraction of Fractions with Different Denominators", please click the Addition and Subtraction of Fractions PPT, Addition and Subtraction of Fractions with Different Denominators PPT tag.

"Addition and Subtraction of Fractions with Different Denominators" Addition and subtraction of fractions PPT teaching courseware:

"Addition and Subtraction of Fractions with Different Denominators" The first part of the PPT teaching courseware for the addition and subtraction of fractions: Learning objectives 1. Understand the principle that the addition and subtraction of fractions with different denominators must first be understood, and be able to correctly perform the calculation of addition and subtraction of fractions with different denominators. At the same time, students can develop conscious calculation...

"Addition and Subtraction of Fractions with Different Denominators" PPT download of addition and subtraction of fractions:

"Addition and Subtraction of Fractions with Different Denominators" Addition and Subtraction of Fractions PPT Download Part One Content: Learning Objectives 1. Experience the process of exploring the calculation rules of addition and subtraction of fractions with different denominators, master the calculation methods of addition and subtraction of fractions with different denominators, and be able to accurately Calculate fractions with different denominators..

"Adding and Subtracting Fractions with Different Denominators" PPT courseware for adding and subtracting fractions:

"Adding and Subtracting Fractions with Different Denominators" PPT courseware for adding and subtracting fractions Teaching Objectives 1. Be able to calculate the addition and subtraction of fractions with different denominators. 2. Master the rules of addition and subtraction of fractions with different denominators. Adding and subtracting fractions with different denominators Calculation method for adding and subtracting fractions with different denominators: Adding fractions with different denominators..

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Update Time: 2024-11-13

This template belongs to Mathematics courseware People's Education Press Fifth Grade Mathematics Volume 2 industry PPT template

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