"Add two-digit numbers to two-digit numbers" PPT courseware on addition and subtraction within ten thousand

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"Add two-digit numbers to two-digit numbers" PPT courseware on addition and subtraction within ten thousand

Part One: Learning Objectives

1. Ability to correctly calculate two-digit plus two-digit numbers orally.

2. Develop problem-solving abilities and the awareness to choose appropriate methods according to the situation.

Two-digit plus two-digit PPT, part two: interactive new teaching

How many tickets should a first grader buy in total?

35+34=?

First calculate 35+30=65,

Then calculate 65+4=69.

First calculate 30+30=60,

Then calculate 5+4=9,

Then calculate 60＋9=69.

How many tickets should a second grader buy in total?

39+44=?

First calculate 39+40=79,

Then calculate 79+4=83.

Summary: When doing oral calculations, we can start from the top.

Add the whole ten number of the second addend from the first addend,

Then use the result of the first step to add the number in the second addend's digit.

You can also calculate from the low position according to the written calculation method.

Two-digit plus two-digit PPT, the third part: Consolidation and expansion

1. How many tickets do third graders need to buy in total?

35+36=71 (people)

2. How many tickets should a fourth grader buy in total?

36+38=74 (people)

3. Can you ask and answer other math questions?

How many tickets should a fifth grader buy in total?

41+42=83 (person)

Two-digit plus two-digit PPT, Part 4: Class Summary

Two digits plus two digits

1. Divide a two-digit number into a one-digit number and an integer, add the integer number to another two-digit number, and then add the result to the one-digit number.

2. Calculate two digits orally and add two digits according to the method of counting from the lowest digit in written calculation.

3. When doing oral arithmetic, you can start from the high digit, add the first addend to the integer number of the second addend; then use the calculation result of the first step to add the number in the second addend's digit...

Keywords: Free download of PPT courseware for third-grade mathematics from the People's Education Press, PPT download of adding two-digit numbers to two-digit numbers, PPT download of addition and subtraction within ten thousand, .PPT format;

For more information about the PPT courseware "Adding and subtracting two-digit numbers and adding two-digit numbers within ten thousand", please click the Addition and subtracting two-digit numbers and adding two-digit numbers within ten thousand PPT tag.

"Add Two-Digits to Two-Digits" PPT teaching courseware for addition and subtraction within ten thousand:

"Add Two-Digit Numbers to Two-Digit Numbers" PPT teaching courseware for addition and subtraction within ten thousand Part One: Learning Objectives 1. To enable students to master the calculation method of adding two-digit digits orally and be able to perform oral calculations correctly. 2. Be able to discover mathematical problems from life, organize and analyze them...

"Two-digit plus two-digit" PPT download of addition and subtraction within ten thousand:

"Two-digit plus two-digit" PPT download of addition and subtraction within 10,000 The first part of the content: Situation introduction A little master of arithmetic. 23+9= 33+30= 26+20= 52+6= (1) How many tickets should a first grader buy in total? There are 39 people in class two (1). There are 44 people in class two (2). (2)..

"Add two-digit numbers to two-digit numbers" Addition and subtraction within 100 PPT courseware 2:

"Two digits plus two digits" Addition and subtraction within 100 PPT courseware 2 Teaching objectives 1. Understand the arithmetic of two digits plus two digits, master the calculation method of two digits plus two digits, and be able to use the vertical form Calculate the addition of two-digit numbers plus two-digit numbers, and use the knowledge you have learned to solve problems in life...

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Update Time: 2024-10-04

This template belongs to Mathematics courseware People's Education Press Third Grade Mathematics Volume 1 industry PPT template

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