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Category | Format | Size |
---|---|---|
Hebei Education Edition Third Grade Mathematics Volume 1 | pptx | 6 MB |
Description
"Dividing two-digit numbers by one-digit numbers orally" Dividing 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 dividing two-digit numbers by one-digit numbers.
2. Able to calculate correctly orally dividing a simple two-digit number by a one-digit number.
3. Actively participate in mathematics activities and have fun learning.
review review
630÷7=270÷9=
120÷3=50÷5=
60÷2= 400÷5=
Before the National Day, the school bought 84 pots of flowers to decorate the campus and planned to arrange them into four identical small flower beds.
84÷4=21(pot)
method one:
If you multiply 4, you get 84. 4×21=84, which means there are 4 21s in 84, so 84÷4=21.
Method Two:
Divide 84 into 80 and 4, divide 80 and 4 by 4 respectively, and finally add up the quotients of the two times.
80÷4=20(pot)
4÷4=1 (pot)
20+1=21 (pot)
practice
1. Oral calculation.
26÷2=39÷3=
68÷2= 48÷4=
96÷3=
66÷6=
2. There are 36 students participating in the rope skipping competition, each group of 3 people. How many skipping ropes do I need to prepare?
36÷3=12(root)
Answer: You need to prepare 12 skipping ropes.
3. The school purchased 66 computers and allocated them to 2 electronic reading rooms. How many computers are installed in each reading room on average?
66÷2=33 (Taiwan)
Answer: On average, there are 33 computers installed in each reading room.
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For more information about the PPT courseware "Dividing two or three digits by one digit, orally calculating two digits by one digit", please click the "Dividing two or three digits by one digit ppt, orally calculating two digits by one digit" ppt tag.
File Info
Update Time: 2024-09-05
This template belongs to Mathematics courseware Hebei Education Edition Third Grade Mathematics Volume 1 industry PPT template
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