"Reading Room" Addition and Subtraction PPT Courseware 2

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"Reading Room" Addition and Subtraction PPT Courseware 2

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"Reading Room" Addition and Subtraction PPT Courseware 2

Oral arithmetic:

12-7=10-8=15-7=

13-6=35-3=56-4=

23-2=67-7=15-9=

What mathematical information did you learn from the graph?

What math questions can you ask?

You can also use vertical calculations! Please do the math with your teacher.

Tell me how you calculated it?

The subtrahend remains unchanged, the minuend is 20 more, and the difference is also 20 more.

The subtrahend remains unchanged, the minuend is 10 more, and the difference is also 10 more.

The subtrahend remains unchanged, and the difference will be greater if the minuend is greater.

The minuend remains unchanged, the subtrahend is 1 more, and the difference is 1 less.

The minuend remains unchanged. If the minuend is greater, the difference will be less.

Keywords: Reading room courseware PPT, Beijing Normal University edition first-year mathematics volume PPT courseware download, first-grade mathematics slide courseware download, reading room PPT courseware download, .PPT format

For more information about the "Addition and Subtraction Reading Room" PPT courseware, please click the Add and Subtract ppt Reading Room ppt tab.

"Reading Room" Adding and Subtracting PPT Courseware:

"Reading Room" Addition and Subtraction PPT Courseware Practice 1. Use a small stick or counter to do it and count. 42-6= 50-3= 54-8= 2. Think about it and do the math. 10-7= 13-5= 100-1= 30-7= 23-5= 100-2= 50-7= 33-5= 100-3= ... ... ... ... ..

File Info

Update Time: 2024-10-03

This template belongs to Mathematics courseware Mathematics Volume 2, First Grade of Beijing Normal University industry PPT template

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"Reading Room" Addition and Subtraction PPT Courseware 2
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