| Category | Format | Size |
|---|---|---|
| Hebei Education Edition Third Grade Mathematics Volume 1 | pptx | 6 MB |
"Multiplying two-digit numbers by one-digit numbers" Multiplying two and three-digit numbers by one-digit numbers PPT courseware
Description
"Multiplying two-digit numbers by one-digit numbers" Multiplying two and three-digit numbers by one-digit numbers PPT courseware
teaching objectives
1. Combined with specific examples, experience the process of independently exploring the simple oral calculation method of multiplying one digit by two digits.
2. Be able to correctly calculate simple oral calculations (the product is within a hundred) by multiplying one digit by two digits.
3. Experience the fun of mathematics learning in the process of independently trying oral arithmetic and communicating personalized algorithms.
review review
Oral calculation
2×4= 8×7= 9×5=
7×4= 9×7= 6×3=
(1) How much did it cost in total to buy 3 books of "Popular Science Books"?
12＋12＋12 =_____(yuan)
12×3 =_____(yuan)
10×3=30
2×3=6
30＋6=36
(2) How much does it cost in total for the 7 "Popular Science Books"?
12×7 =_____(this)
10×7=70
2×7=14
70＋14=84
Answer: The total cost of 7 books was 84 yuan.
In conclusion
Oral calculation method of multiplying a one-digit number by a two-digit number: first divide the two-digit number into an integer and a one-digit number, then multiply them by the original one-digit number respectively, and finally add the products of the two multiplications.
practice
1. Oral calculation.
2. (1) How much does it cost to buy a carton of milk?
(2) How much does it cost to buy 2 boxes of milk? How much does it cost?
3.5 How many people can sit in a van?
How many people can sit in 13 cars?
4. How many passengers can be accommodated in 3 buses?
5. How much money do you need to bring to buy any two of these products?
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For more information about "Two or three digits multiplied by one digit, two digits multiplied by one digit" PPT courseware, please click on the "Two or three digits multiplied by one digit ppt" Two digits multiplied by one digit ppt tag.
File Info
Update Time: 2024-06-27
This template belongs to Mathematics courseware Hebei Education Edition Third Grade Mathematics Volume 1 industry PPT template
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