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

Description

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

Part One: Learning Objectives

1. Enable students to master the calculation method of adding two-digit numbers orally to two-digit numbers and be able to perform oral arithmetic correctly.

2. Be able to discover mathematical problems from life, organize and analyze data, and solve practical problems.

3. Cultivate students' problem-solving abilities and improve their thinking flexibility.

Learn important and difficult points

main difficulty

Perform correct oral arithmetic of two-digit addition.

Ability to choose appropriate methods to solve problems based on specific circumstances.

Two-digit plus two-digit PPT, part two: review

Oral calculation.

4+53= 67+5= 24+20= 10+29=

To add a two-digit number to a one-digit number, you can first add the numbers in the ones place and then add the whole tens.

To add a two-digit number to an integer, you can first add the numbers in the tens place and then add the numbers in the ones place.

Two-digit plus two-digit PPT, part three: interpretation of examples

(1) How many tickets should a first grader buy in total?

35 + 34 =____

method one

First calculate 35+30=65, then calculate 65+4=69

Method Two

First calculate 30+30=60, then calculate 5+4=9, and finally calculate 60+9=69

Method three

First calculate 30+34=64, then calculate 64+5=69

(2) How many tickets should a second grader buy in total?

39 + 44 =____

method one

First calculate 39+40=79, then calculate 79+4=83

Method Two

First calculate 30+40=70, then calculate 9+4=13, and finally calculate 70+13=83

Two-digit plus two-digit PPT, part 4: summary

Oral arithmetic of adding two digits to two digits

Both calculations are two-digit numbers plus two-digit numbers. The former adds single digits without carry, while the latter adds single digits with carry.

Two-digit plus two-digit PPT, part five: quiz in class

1. Oral calculation competition to see who can do all the calculations correctly.

2. New Year’s Day is here. The students have made some lanterns. 37 have been hung up and 14 are left. How many lanterns have the students made in total?

37 + 14 = 51 (pieces)

Answer: The students made a total of 51 lanterns.

Two-digit plus two-digit PPT, Part Six: Homework

1. Select from the after-class exercises;

2. Complete the exercises in this lesson in the exercise book.

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.

"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" PPT courseware for addition and subtraction within ten thousand:

"Add Two-Digits to Two-Digits" PPT Courseware on Addition and Subtraction within Ten Thousands Part One Content: Learning Objectives 1. Be able 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 digits plus two..

"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: 2024-10-05

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

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