"Continuous Addition" Addition and Subtraction Mixed Operation PPT Courseware

Description

"Continuous Addition" Addition and Subtraction Mixed Operation PPT Courseware

teaching objectives

1. Combined with specific situations, experience the process of independently exploring three consecutive addition calculation methods.

2. Understand the order of continuous addition calculations, and be able to use your own methods to flexibly calculate and add numbers within 100.

3. Feel the diversity of algorithms and inspire love for the motherland.

The number of medals won by Chinese athletes from the 27th to 29th Olympic Games is as follows:

What information did you learn from the table above?

Calculate: How many medals did our country win in the 29th Olympic Games?

51+21+28=( )(block)

I calculate like this:

50+20+20=90 (blocks)

1+1+8=10 (blocks)

90+10=100 (blocks)

To calculate continuous addition, you can calculate from left to right.

practice

1. In 2012, the 30th Olympic Games were held in London, England. The number of medals won by Chinese athletes is as follows.

Calculate: How many medals did our country win in the 30th Olympic Games?

2. This group of children has a total of ( ) names.

3. Calculate using your favorite method.

35＋20＋38 18＋36+42

24＋45＋25 37＋29+13

10＋23＋37 66＋24+7

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For more information about the PPT courseware "Addition, Subtraction, Mixed Operations, and Continuous Addition", please click on the Addition, Subtraction, Mixed Operations, and Continuous Addition ppt tag.

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File Info

Update Time: 2024-10-03

This template belongs to Mathematics courseware Hebei Education Edition Second Grade Mathematics Volume 1 industry PPT template

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