"Mixed Operations of Addition and Subtraction of Fractions" Addition and Subtraction of Fractions PPT

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"Mixed Operations of Addition and Subtraction of Fractions" Addition and Subtraction of Fractions PPT

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"Mixed Operations of Addition and Subtraction of Fractions" Addition and Subtraction of Fractions PPT

Part One: Learning Objectives

1. Through teaching, students can master that the commutative law of integer addition and the associative law are also applicable to fractions.

2. In the process of exploring knowledge, cultivate students’ abilities of knowledge transfer, analogy and induction and generalization.

3. Cultivate students’ habits of careful calculation and the ability to use simple and flexible methods to solve problems.

[Key Points] Understand and master the laws of integer operations that are still applicable to the addition of fractions.

[Difficulty] Perform simple operations of adding and subtracting fractions correctly and flexibly.

PPT on mixed operations of addition and subtraction of fractions, part 2: classroom introduction

Use simple algorithms to solve the following problems.

378+527+73 167+289+33 427+58-27

The above questions use the commutative law of addition and the associative law respectively.

Can the laws of whole number operations be used in addition and subtraction of fractions?

PPT on mixed operations of addition and subtraction of fractions, part 3: classroom exercises

1. Fill in the appropriate operation symbols in ○.

The calculation uses the commutative law of addition

The formula uses the associative law of addition

2. Use simple methods to calculate the following questions.

3. Connect.

4. Choose.

5. Fill in the appropriate numbers in the brackets to make the equation true.

Carefully observe what operation laws are used in each calculation.

PPT on mixed operations of addition and subtraction of fractions, part 4 content: Class summary

Simple operations for adding and subtracting fractions: The operational laws of adding integers are also applicable to adding fractions. The associative law of addition and the commutative law can be used at the same time.

PPT on mixed operations of addition and subtraction of fractions, Part 5: Classwork

1. Column calculation.

There are two ropes. The first one is 3/8 meter long and the second one is 1/5 meter shorter than the first one. How many meters are the total length of these two ropes?

Answer: The two ropes are 11/20 meters long in total.

2. Calculate.

3. Solve the problem.

Spring is here, and the farmer uncle watered the fruit trees. He watered 2/5 of all the fruit trees in the morning on the first day, 3/8 in the afternoon, and 1/5 in the morning of the second day. What fraction of the trees were watered in total?

Keywords: Free download of PPT courseware for mathematics in the second volume of the fifth grade of the People's Education Press, PPT download of mixed operations of addition and subtraction of fractions, PPT download of addition and subtraction of fractions, .PPT format;

For more information about the PPT courseware "Addition and Subtraction of Fractions and Mixed Operations of Fractional Addition and Subtraction", please click the Addition and Subtraction of Fractions PPT Mixed Operations of Fractions Addition and Subtraction PPT tag.

"Mixed Operations of Addition and Subtraction of Fractions" PPT teaching courseware for addition and subtraction of fractions:

"Mixed Operations of Addition and Subtraction of Fractions" PPT Teaching Courseware for Addition and Subtraction of Fractions Part One Content: Learning Objectives 1. Master the order of operations and calculation methods of mixed operations of addition and subtraction of fractions, as well as the order of operations of mixed operations of addition and subtraction of fractions with parentheses and algorithms. (Heavy..

"Mixed Operations of Addition and Subtraction of Fractions" PPT download of addition and subtraction of fractions:

"Mixed Operations of Addition and Subtraction of Fractions" The addition and subtraction of fractions PPT download Part 1 content: Exciting introduction to talk about the order of operations of the following questions 112+8-13 16-4+21 24-(18+3) Mixed addition and subtraction of fractions The order of operations and the order of operations of mixed integer addition and subtraction operations..

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"Mixed Operations of Addition and Subtraction of Fractions with Different Denominators" Fraction Addition and Subtraction PPT Courseware There is a garden on the campus of Hongshan Primary School, in which the area of ​​rose flowers accounts for ( ), the area of ​​azaleas accounts for ( ), and the rest is lawn. What percentage of the area is the lawn? Quantitative relationship Garden area -..

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Update Time: 2024-10-19

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