"Adding and subtracting fractions with the same denominator" Addition and subtraction of fractions PPT download

Description

"Adding and subtracting fractions with the same denominator" Addition and subtraction of fractions PPT download

Part One: Learning Objectives

1. Understand the meaning of adding and subtracting fractions, master the calculation methods of adding and subtracting fractions with the same denominator, and be able to perform calculations correctly. (emphasis)

2. Understand the arithmetic of addition and subtraction of fractions with the same denominator. (difficulty)

PPT on adding and subtracting fractions with the same denominator, part 2: exploring new knowledge

Knowledge point 1 Calculation method of adding fractions with the same denominator

I ate 3 pieces of cake.

I ate 1 piece of cake.

(1) How many pieces of cake did dad and mom eat in total?

Think about it: 1. How to calculate it?

2. What do you think?

3. What should you pay attention to when calculating?

Knowledge refining

1. The addition of fractions with the same denominator has the same meaning as the addition of integers. They are both operations that combine two numbers into one number.

2. Calculation method for adding fractions with the same denominator: Keep the denominator unchanged and add the numerators.

3. If the calculation result can be reduced, it should be reduced to the simplest fraction; if it can be reduced to an integer, it should usually be reduced to an integer.

Knowledge point 2 Calculation method of subtracting fractions with the same denominator

I ate 3 pieces of cake. I ate 1 piece of cake.

(2) How many more cakes did dad eat than mom?

Think about it: 1. How to calculate it?

2. What do you think?

3. What should you pay attention to when calculating?

I find:

①The denominators of both equations are the same.

② During calculation, the denominator remains unchanged, only the numerator is added and subtracted.

③The calculation results are all simplest fractions.

Knowledge refining

1. The meaning of subtraction of fractions with the same denominator is the same as that of subtraction of integers. They are both operations of finding the sum of two addends and one of the addends to find the other addend.

2. Calculation method for subtracting fractions with the same denominator: Keep the denominator unchanged and subtract the numerators.

Addition and subtraction of fractions with the same denominator PPT, Part 3 content: Class summary

What knowledge have you learned in this class?

1. The addition and subtraction of fractions with the same denominator have the same meaning as the addition and subtraction of integers.

2. Calculation method of adding and subtracting fractions with the same denominator: Keep the denominator unchanged, only add or subtract the numerators, and reduce the calculation result to the simplest fraction that can be reduced.

Addition and subtraction of fractions with the same denominator PPT, Part 4: Homework

Assignment 1: Complete the exercises related to the textbook.

Assignment 2: Complete the corresponding exercises.

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 addition and subtraction of fractions with the same denominator, PPT download of addition and subtraction of fractions, .PPT format;

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"Adding and subtracting fractions with the same denominator" Addition and subtraction of fractions PPT:

"Addition and Subtraction of Fractions with Same Denominators" Addition and Subtraction of Fractions PPT Part 1: Exciting Introduction I ate 3 pieces of cake. I ate 1 piece of cake. (1) What mathematical information did you get from the picture? (2) Based on this information, what mathematical questions can you ask? ..

"Adding and subtracting fractions with the same denominator" PPT courseware for preliminary understanding of fractions:

"Adding and Subtracting Fractions with the Same Denominator" Preliminary Understanding of Fractions PPT Courseware Review Fill in the Blanks 1: 3/8 means dividing the unit 1 evenly into ( ) parts, indicating the ( ) parts. Its fractional unit is ( ), and there are ( ) ( ) in it. Review fill-in-the-blank 2: (1) 7/8 points...

"Simple Addition and Subtraction of Fractions with Same Denominators" Preliminary Understanding of Fractions PPT Courseware 2:

"Simple Addition and Subtraction of Fractions with Same Denominators" Preliminary Understanding of Fractions PPT Courseware 2 Learning Objectives 1. Combined with specific situations, students can use the knowledge of addition and subtraction of fractions with the same denominator to solve some simple practical problems in life, and cultivate students' ability to analyze and solve problems. 2..

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Update Time: 2024-09-27

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

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