| Category | Format | Size |
|---|---|---|
| Beijing Normal University Edition First Grade Mathematics Volume 2 | pptx | 6 MB |
"Library" addition and subtraction PPT
Description
"Library" addition and subtraction PPT
Part One: Learning Objectives
1. Explore and master the calculation method of two-digit plus one-digit carry addition, and initially experience the diversity of calculation methods.
2. Understand the arithmetic of different algorithms and the operation rules of "full decimal 1", and penetrate the idea of combining numbers and shapes.
3. Feel the close connection between number operations and life, and further appreciate the significance of addition.
focus
Master the calculation method of carrying addition of two digits and one digit.
difficulty
Understand the operation rules of "full decimal 1".
Library PPT, part 2: review
1. See who can calculate correctly and quickly.
9+5＝ 8+6＝ 4+8＝ 2+4+1＝
5＋7＝ 3＋8＝ 8＋8＝ 5＋3＋1＝
2. The bird delivers the message. (continuously)
Library PPT, Part 3: Explanation of Example Questions
Method 1: Use the composition of numbers to calculate.
8+4=12
20+12=32
Method 2: Use the ten-to-ten method to calculate.
28+2=30
30＋2＝32
Method 3: Use vertical calculation.
How many books are there on the second shelf? Draw and fill in.
13+8=21 (original)
Answer: There are 21 books on the second shelf.
How many books are there on the third shelf? Draw and fill in.
13+9=22 (original)
Answer: There are 22 books on the third shelf.
Library PPT, Part 4: Quiz in class
1. Go around in a circle and do the math.
2. How many did Brother Rabbit pick?
37+8=45 (pieces)
3. Draw a picture and do the math.
4. Forest Doctor.
5. Fill in “ > ”, “ < ” or “ = ” in ○.
Library PPT, Part 5: Homework
1. Choose from the after-school exercises.
Keywords: Free download of Beijing Normal University Edition first-year mathematics PPT courseware for volume 2, library PPT download, addition and subtraction PPT download, .PPT format;
For more information about the "Adding and Subtracting Library" PPT courseware, please click the Adding and Subtracting PPT Library PPT tab.
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"Little Library" Addition and Subtraction PPT download:
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File Info
Update Time: 2024-06-29
This template belongs to Mathematics courseware Beijing Normal University Edition First Grade Mathematics Volume 2 industry PPT template
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